Home / 20,306.07-28,023.00-11,355.17

Finding the Fourth Proportional to 20,306.07, 28,023.00 and 11,355.17

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Solution

The fourth proportional to 20,306.07, 28,023.00 and 11,355.17 is: 15,670.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.07 : 28,023.00 = 11,355.17 : x
  2. Step 2: Convert to fraction form
    20,306.07/28,023.00 = 11,355.17/x
  3. Step 3: Cross multiply
    20,306.07x = 28,023.00 × 11,355.17
  4. Step 4: Simplify right side
    20,306.07x = 318,205,746.21
  5. Step 5: Solve for x
    x = 318,205,746.21/20,306.07
  6. Step 6: Final answer
    x = 15,670.47

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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.