Home / 20,715.20-28,577.18-14,003.16

Finding the Fourth Proportional to 20,715.20, 28,577.18 and 14,003.16

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Solution

The fourth proportional to 20,715.20, 28,577.18 and 14,003.16 is: 19,317.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.20 : 28,577.18 = 14,003.16 : x
  2. Step 2: Convert to fraction form
    20,715.20/28,577.18 = 14,003.16/x
  3. Step 3: Cross multiply
    20,715.20x = 28,577.18 × 14,003.16
  4. Step 4: Simplify right side
    20,715.20x = 400,170,823.89
  5. Step 5: Solve for x
    x = 400,170,823.89/20,715.20
  6. Step 6: Final answer
    x = 19,317.74

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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.