Home / 28,317.15-39,079.85-16,987.10

Finding the Fourth Proportional to 28,317.15, 39,079.85 and 16,987.10

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Solution

The fourth proportional to 28,317.15, 39,079.85 and 16,987.10 is: 23,443.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.15 : 39,079.85 = 16,987.10 : x
  2. Step 2: Convert to fraction form
    28,317.15/39,079.85 = 16,987.10/x
  3. Step 3: Cross multiply
    28,317.15x = 39,079.85 × 16,987.10
  4. Step 4: Simplify right side
    28,317.15x = 663,853,039.60
  5. Step 5: Solve for x
    x = 663,853,039.60/28,317.15
  6. Step 6: Final answer
    x = 23,443.50

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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.