Home / 18,432.81-25,438.59-11,359.71

Finding the Fourth Proportional to 18,432.81, 25,438.59 and 11,359.71

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Solution

The fourth proportional to 18,432.81, 25,438.59 and 11,359.71 is: 15,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,432.81 : 25,438.59 = 11,359.71 : x
  2. Step 2: Convert to fraction form
    18,432.81/25,438.59 = 11,359.71/x
  3. Step 3: Cross multiply
    18,432.81x = 25,438.59 × 11,359.71
  4. Step 4: Simplify right side
    18,432.81x = 288,975,005.21
  5. Step 5: Solve for x
    x = 288,975,005.21/18,432.81
  6. Step 6: Final answer
    x = 15,677.21

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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.