Home / 19,770.04-27,281.10-11,387.16

Finding the Fourth Proportional to 19,770.04, 27,281.10 and 11,387.16

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Solution

The fourth proportional to 19,770.04, 27,281.10 and 11,387.16 is: 15,713.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.04 : 27,281.10 = 11,387.16 : x
  2. Step 2: Convert to fraction form
    19,770.04/27,281.10 = 11,387.16/x
  3. Step 3: Cross multiply
    19,770.04x = 27,281.10 × 11,387.16
  4. Step 4: Simplify right side
    19,770.04x = 310,654,250.68
  5. Step 5: Solve for x
    x = 310,654,250.68/19,770.04
  6. Step 6: Final answer
    x = 15,713.39

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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.