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Finding the Fourth Proportional to 28,422.53, 42,637.67 and 9,697.53

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Solution

The fourth proportional to 28,422.53, 42,637.67 and 9,697.53 is: 14,547.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.53 : 42,637.67 = 9,697.53 : x
  2. Step 2: Convert to fraction form
    28,422.53/42,637.67 = 9,697.53/x
  3. Step 3: Cross multiply
    28,422.53x = 42,637.67 × 9,697.53
  4. Step 4: Simplify right side
    28,422.53x = 413,480,035.47
  5. Step 5: Solve for x
    x = 413,480,035.47/28,422.53
  6. Step 6: Final answer
    x = 14,547.62

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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.