Home / 28,484.90-39,305.81-15,737.32

Finding the Fourth Proportional to 28,484.90, 39,305.81 and 15,737.32

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Solution

The fourth proportional to 28,484.90, 39,305.81 and 15,737.32 is: 21,715.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,484.90 : 39,305.81 = 15,737.32 : x
  2. Step 2: Convert to fraction form
    28,484.90/39,305.81 = 15,737.32/x
  3. Step 3: Cross multiply
    28,484.90x = 39,305.81 × 15,737.32
  4. Step 4: Simplify right side
    28,484.90x = 618,568,151.24
  5. Step 5: Solve for x
    x = 618,568,151.24/28,484.90
  6. Step 6: Final answer
    x = 21,715.65

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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.