Home / 19,619.40-29,472.30-13,787.40

Finding the Fourth Proportional to 19,619.40, 29,472.30 and 13,787.40

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Solution

The fourth proportional to 19,619.40, 29,472.30 and 13,787.40 is: 20,711.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.40 : 29,472.30 = 13,787.40 : x
  2. Step 2: Convert to fraction form
    19,619.40/29,472.30 = 13,787.40/x
  3. Step 3: Cross multiply
    19,619.40x = 29,472.30 × 13,787.40
  4. Step 4: Simplify right side
    19,619.40x = 406,346,389.02
  5. Step 5: Solve for x
    x = 406,346,389.02/19,619.40
  6. Step 6: Final answer
    x = 20,711.46

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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.