Home / 28,020.74-42,031.10-19,229.00

Finding the Fourth Proportional to 28,020.74, 42,031.10 and 19,229.00

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Solution

The fourth proportional to 28,020.74, 42,031.10 and 19,229.00 is: 28,843.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.74 : 42,031.10 = 19,229.00 : x
  2. Step 2: Convert to fraction form
    28,020.74/42,031.10 = 19,229.00/x
  3. Step 3: Cross multiply
    28,020.74x = 42,031.10 × 19,229.00
  4. Step 4: Simplify right side
    28,020.74x = 808,215,859.82
  5. Step 5: Solve for x
    x = 808,215,859.82/28,020.74
  6. Step 6: Final answer
    x = 28,843.49

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Double scale
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Similar ratio
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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.