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Finding the Fourth Proportional to 19,937.80, 27,514.25 and 10,984.87

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Solution

The fourth proportional to 19,937.80, 27,514.25 and 10,984.87 is: 15,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,937.80 : 27,514.25 = 10,984.87 : x
  2. Step 2: Convert to fraction form
    19,937.80/27,514.25 = 10,984.87/x
  3. Step 3: Cross multiply
    19,937.80x = 27,514.25 × 10,984.87
  4. Step 4: Simplify right side
    19,937.80x = 302,240,459.40
  5. Step 5: Solve for x
    x = 302,240,459.40/19,937.80
  6. Step 6: Final answer
    x = 15,159.17

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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.