Home / 20,534.40-28,337.50-11,102.98

Finding the Fourth Proportional to 20,534.40, 28,337.50 and 11,102.98

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Solution

The fourth proportional to 20,534.40, 28,337.50 and 11,102.98 is: 15,322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.40 : 28,337.50 = 11,102.98 : x
  2. Step 2: Convert to fraction form
    20,534.40/28,337.50 = 11,102.98/x
  3. Step 3: Cross multiply
    20,534.40x = 28,337.50 × 11,102.98
  4. Step 4: Simplify right side
    20,534.40x = 314,630,695.75
  5. Step 5: Solve for x
    x = 314,630,695.75/20,534.40
  6. Step 6: Final answer
    x = 15,322.13

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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.