Home / 19,159.40-28,739.10-9,317.90

Finding the Fourth Proportional to 19,159.40, 28,739.10 and 9,317.90

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Solution

The fourth proportional to 19,159.40, 28,739.10 and 9,317.90 is: 13,976.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,159.40 : 28,739.10 = 9,317.90 : x
  2. Step 2: Convert to fraction form
    19,159.40/28,739.10 = 9,317.90/x
  3. Step 3: Cross multiply
    19,159.40x = 28,739.10 × 9,317.90
  4. Step 4: Simplify right side
    19,159.40x = 267,788,059.89
  5. Step 5: Solve for x
    x = 267,788,059.89/19,159.40
  6. Step 6: Final answer
    x = 13,976.85

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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.