Home / 28,311.69-39,070.60-15,565.41

Finding the Fourth Proportional to 28,311.69, 39,070.60 and 15,565.41

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Solution

The fourth proportional to 28,311.69, 39,070.60 and 15,565.41 is: 21,480.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,311.69 : 39,070.60 = 15,565.41 : x
  2. Step 2: Convert to fraction form
    28,311.69/39,070.60 = 15,565.41/x
  3. Step 3: Cross multiply
    28,311.69x = 39,070.60 × 15,565.41
  4. Step 4: Simplify right side
    28,311.69x = 608,149,869.03
  5. Step 5: Solve for x
    x = 608,149,869.03/28,311.69
  6. Step 6: Final answer
    x = 21,480.52

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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.