Home / 12,590.49-17,349.27-9,740.55

Finding the Fourth Proportional to 12,590.49, 17,349.27 and 9,740.55

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Solution

The fourth proportional to 12,590.49, 17,349.27 and 9,740.55 is: 13,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.49 : 17,349.27 = 9,740.55 : x
  2. Step 2: Convert to fraction form
    12,590.49/17,349.27 = 9,740.55/x
  3. Step 3: Cross multiply
    12,590.49x = 17,349.27 × 9,740.55
  4. Step 4: Simplify right side
    12,590.49x = 168,991,431.90
  5. Step 5: Solve for x
    x = 168,991,431.90/12,590.49
  6. Step 6: Final answer
    x = 13,422.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.