Home / 13,050.81-18,010.20-7,385.76

Finding the Fourth Proportional to 13,050.81, 18,010.20 and 7,385.76

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Solution

The fourth proportional to 13,050.81, 18,010.20 and 7,385.76 is: 10,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,050.81 : 18,010.20 = 7,385.76 : x
  2. Step 2: Convert to fraction form
    13,050.81/18,010.20 = 7,385.76/x
  3. Step 3: Cross multiply
    13,050.81x = 18,010.20 × 7,385.76
  4. Step 4: Simplify right side
    13,050.81x = 133,019,014.75
  5. Step 5: Solve for x
    x = 133,019,014.75/13,050.81
  6. Step 6: Final answer
    x = 10,192.40

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Half scale
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Double scale
Find fourth proportional to 13,051.81, 18,011.58 and 7,386.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.