Home / 28,013.28-38,656.80-15,437.04

Finding the Fourth Proportional to 28,013.28, 38,656.80 and 15,437.04

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Solution

The fourth proportional to 28,013.28, 38,656.80 and 15,437.04 is: 21,302.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.28 : 38,656.80 = 15,437.04 : x
  2. Step 2: Convert to fraction form
    28,013.28/38,656.80 = 15,437.04/x
  3. Step 3: Cross multiply
    28,013.28x = 38,656.80 × 15,437.04
  4. Step 4: Simplify right side
    28,013.28x = 596,746,567.87
  5. Step 5: Solve for x
    x = 596,746,567.87/28,013.28
  6. Step 6: Final answer
    x = 21,302.27

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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.