Home / 28,538.57-42,809.73-7,479.13

Finding the Fourth Proportional to 28,538.57, 42,809.73 and 7,479.13

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Solution

The fourth proportional to 28,538.57, 42,809.73 and 7,479.13 is: 11,219.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.57 : 42,809.73 = 7,479.13 : x
  2. Step 2: Convert to fraction form
    28,538.57/42,809.73 = 7,479.13/x
  3. Step 3: Cross multiply
    28,538.57x = 42,809.73 × 7,479.13
  4. Step 4: Simplify right side
    28,538.57x = 320,179,428.91
  5. Step 5: Solve for x
    x = 320,179,428.91/28,538.57
  6. Step 6: Final answer
    x = 11,219.18

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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.