Home / 13,210.76-18,230.27-7,908.50

Finding the Fourth Proportional to 13,210.76, 18,230.27 and 7,908.50

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Solution

The fourth proportional to 13,210.76, 18,230.27 and 7,908.50 is: 10,913.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.76 : 18,230.27 = 7,908.50 : x
  2. Step 2: Convert to fraction form
    13,210.76/18,230.27 = 7,908.50/x
  3. Step 3: Cross multiply
    13,210.76x = 18,230.27 × 7,908.50
  4. Step 4: Simplify right side
    13,210.76x = 144,174,038.27
  5. Step 5: Solve for x
    x = 144,174,038.27/13,210.76
  6. Step 6: Final answer
    x = 10,913.38

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Half scale
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Double scale
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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.