Home / 30,733.90-42,397.22-17,978.74

Finding the Fourth Proportional to 30,733.90, 42,397.22 and 17,978.74

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Solution

The fourth proportional to 30,733.90, 42,397.22 and 17,978.74 is: 24,801.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,733.90 : 42,397.22 = 17,978.74 : x
  2. Step 2: Convert to fraction form
    30,733.90/42,397.22 = 17,978.74/x
  3. Step 3: Cross multiply
    30,733.90x = 42,397.22 × 17,978.74
  4. Step 4: Simplify right side
    30,733.90x = 762,248,595.10
  5. Step 5: Solve for x
    x = 762,248,595.10/30,733.90
  6. Step 6: Final answer
    x = 24,801.56

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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.