Home / 19,129.80-28,686.60-9,272.10

Finding the Fourth Proportional to 19,129.80, 28,686.60 and 9,272.10

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Solution

The fourth proportional to 19,129.80, 28,686.60 and 9,272.10 is: 13,904.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,129.80 : 28,686.60 = 9,272.10 : x
  2. Step 2: Convert to fraction form
    19,129.80/28,686.60 = 9,272.10/x
  3. Step 3: Cross multiply
    19,129.80x = 28,686.60 × 9,272.10
  4. Step 4: Simplify right side
    19,129.80x = 265,985,023.86
  5. Step 5: Solve for x
    x = 265,985,023.86/19,129.80
  6. Step 6: Final answer
    x = 13,904.22

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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.