Home / 28,265.04-39,005.76-15,689.76

Finding the Fourth Proportional to 28,265.04, 39,005.76 and 15,689.76

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Solution

The fourth proportional to 28,265.04, 39,005.76 and 15,689.76 is: 21,651.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,265.04 : 39,005.76 = 15,689.76 : x
  2. Step 2: Convert to fraction form
    28,265.04/39,005.76 = 15,689.76/x
  3. Step 3: Cross multiply
    28,265.04x = 39,005.76 × 15,689.76
  4. Step 4: Simplify right side
    28,265.04x = 611,991,013.02
  5. Step 5: Solve for x
    x = 611,991,013.02/28,265.04
  6. Step 6: Final answer
    x = 21,651.87

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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.