Home / 28,279.61-42,419.54-9,559.74

Finding the Fourth Proportional to 28,279.61, 42,419.54 and 9,559.74

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Solution

The fourth proportional to 28,279.61, 42,419.54 and 9,559.74 is: 14,339.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.61 : 42,419.54 = 9,559.74 : x
  2. Step 2: Convert to fraction form
    28,279.61/42,419.54 = 9,559.74/x
  3. Step 3: Cross multiply
    28,279.61x = 42,419.54 × 9,559.74
  4. Step 4: Simplify right side
    28,279.61x = 405,519,956.29
  5. Step 5: Solve for x
    x = 405,519,956.29/28,279.61
  6. Step 6: Final answer
    x = 14,339.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.