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Finding the Fourth Proportional to 19,007.80, 28,512.18 and 9,010.20

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Solution

The fourth proportional to 19,007.80, 28,512.18 and 9,010.20 is: 13,515.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,007.80 : 28,512.18 = 9,010.20 : x
  2. Step 2: Convert to fraction form
    19,007.80/28,512.18 = 9,010.20/x
  3. Step 3: Cross multiply
    19,007.80x = 28,512.18 × 9,010.20
  4. Step 4: Simplify right side
    19,007.80x = 256,900,444.24
  5. Step 5: Solve for x
    x = 256,900,444.24/19,007.80
  6. Step 6: Final answer
    x = 13,515.53

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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.