Home / 20,307.30-28,025.15-11,354.77

Finding the Fourth Proportional to 20,307.30, 28,025.15 and 11,354.77

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Solution

The fourth proportional to 20,307.30, 28,025.15 and 11,354.77 is: 15,670.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.30 : 28,025.15 = 11,354.77 : x
  2. Step 2: Convert to fraction form
    20,307.30/28,025.15 = 11,354.77/x
  3. Step 3: Cross multiply
    20,307.30x = 28,025.15 × 11,354.77
  4. Step 4: Simplify right side
    20,307.30x = 318,219,132.47
  5. Step 5: Solve for x
    x = 318,219,132.47/20,307.30
  6. Step 6: Final answer
    x = 15,670.18

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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.