Home / 30,191.17-45,272.19-12,656.29

Finding the Fourth Proportional to 30,191.17, 45,272.19 and 12,656.29

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Solution

The fourth proportional to 30,191.17, 45,272.19 and 12,656.29 is: 18,978.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,191.17 : 45,272.19 = 12,656.29 : x
  2. Step 2: Convert to fraction form
    30,191.17/45,272.19 = 12,656.29/x
  3. Step 3: Cross multiply
    30,191.17x = 45,272.19 × 12,656.29
  4. Step 4: Simplify right side
    30,191.17x = 572,977,965.58
  5. Step 5: Solve for x
    x = 572,977,965.58/30,191.17
  6. Step 6: Final answer
    x = 18,978.33

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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.