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Finding the Fourth Proportional to 19,207.40, 28,811.10 and 15,708.20

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Solution

The fourth proportional to 19,207.40, 28,811.10 and 15,708.20 is: 23,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.40 : 28,811.10 = 15,708.20 : x
  2. Step 2: Convert to fraction form
    19,207.40/28,811.10 = 15,708.20/x
  3. Step 3: Cross multiply
    19,207.40x = 28,811.10 × 15,708.20
  4. Step 4: Simplify right side
    19,207.40x = 452,570,521.02
  5. Step 5: Solve for x
    x = 452,570,521.02/19,207.40
  6. Step 6: Final answer
    x = 23,562.30

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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.