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Finding the Fourth Proportional to 26,957.80, 40,411.10 and 21,031.40

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Solution

The fourth proportional to 26,957.80, 40,411.10 and 21,031.40 is: 31,527.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,957.80 : 40,411.10 = 21,031.40 : x
  2. Step 2: Convert to fraction form
    26,957.80/40,411.10 = 21,031.40/x
  3. Step 3: Cross multiply
    26,957.80x = 40,411.10 × 21,031.40
  4. Step 4: Simplify right side
    26,957.80x = 849,902,008.54
  5. Step 5: Solve for x
    x = 849,902,008.54/26,957.80
  6. Step 6: Final answer
    x = 31,527.13

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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.