Home / 15,435.73-21,270.45-10,711.81

Finding the Fourth Proportional to 15,435.73, 21,270.45 and 10,711.81

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Solution

The fourth proportional to 15,435.73, 21,270.45 and 10,711.81 is: 14,760.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.73 : 21,270.45 = 10,711.81 : x
  2. Step 2: Convert to fraction form
    15,435.73/21,270.45 = 10,711.81/x
  3. Step 3: Cross multiply
    15,435.73x = 21,270.45 × 10,711.81
  4. Step 4: Simplify right side
    15,435.73x = 227,845,019.01
  5. Step 5: Solve for x
    x = 227,845,019.01/15,435.73
  6. Step 6: Final answer
    x = 14,760.88

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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.