Home / 20,515.32-28,313.14-12,134.52

Finding the Fourth Proportional to 20,515.32, 28,313.14 and 12,134.52

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Solution

The fourth proportional to 20,515.32, 28,313.14 and 12,134.52 is: 16,746.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.32 : 28,313.14 = 12,134.52 : x
  2. Step 2: Convert to fraction form
    20,515.32/28,313.14 = 12,134.52/x
  3. Step 3: Cross multiply
    20,515.32x = 28,313.14 × 12,134.52
  4. Step 4: Simplify right side
    20,515.32x = 343,566,363.59
  5. Step 5: Solve for x
    x = 343,566,363.59/20,515.32
  6. Step 6: Final answer
    x = 16,746.82

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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.