Home / 12,810.76-19,212.70-4,911.56

Finding the Fourth Proportional to 12,810.76, 19,212.70 and 4,911.56

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Solution

The fourth proportional to 12,810.76, 19,212.70 and 4,911.56 is: 7,366.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.76 : 19,212.70 = 4,911.56 : x
  2. Step 2: Convert to fraction form
    12,810.76/19,212.70 = 4,911.56/x
  3. Step 3: Cross multiply
    12,810.76x = 19,212.70 × 4,911.56
  4. Step 4: Simplify right side
    12,810.76x = 94,364,328.81
  5. Step 5: Solve for x
    x = 94,364,328.81/12,810.76
  6. Step 6: Final answer
    x = 7,366.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.