Home / 30,492.20-42,070.02-17,909.80

Finding the Fourth Proportional to 30,492.20, 42,070.02 and 17,909.80

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Solution

The fourth proportional to 30,492.20, 42,070.02 and 17,909.80 is: 24,710.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,492.20 : 42,070.02 = 17,909.80 : x
  2. Step 2: Convert to fraction form
    30,492.20/42,070.02 = 17,909.80/x
  3. Step 3: Cross multiply
    30,492.20x = 42,070.02 × 17,909.80
  4. Step 4: Simplify right side
    30,492.20x = 753,465,644.20
  5. Step 5: Solve for x
    x = 753,465,644.20/30,492.20
  6. Step 6: Final answer
    x = 24,710.11

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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.