Home / 30,471.30-42,032.77-18,363.52

Finding the Fourth Proportional to 30,471.30, 42,032.77 and 18,363.52

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Solution

The fourth proportional to 30,471.30, 42,032.77 and 18,363.52 is: 25,331.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,471.30 : 42,032.77 = 18,363.52 : x
  2. Step 2: Convert to fraction form
    30,471.30/42,032.77 = 18,363.52/x
  3. Step 3: Cross multiply
    30,471.30x = 42,032.77 × 18,363.52
  4. Step 4: Simplify right side
    30,471.30x = 771,869,612.55
  5. Step 5: Solve for x
    x = 771,869,612.55/30,471.30
  6. Step 6: Final answer
    x = 25,331.04

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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.