Home / 30,191.92-45,273.31-12,657.04

Finding the Fourth Proportional to 30,191.92, 45,273.31 and 12,657.04

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Solution

The fourth proportional to 30,191.92, 45,273.31 and 12,657.04 is: 18,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,191.92 : 45,273.31 = 12,657.04 : x
  2. Step 2: Convert to fraction form
    30,191.92/45,273.31 = 12,657.04/x
  3. Step 3: Cross multiply
    30,191.92x = 45,273.31 × 12,657.04
  4. Step 4: Simplify right side
    30,191.92x = 573,026,095.60
  5. Step 5: Solve for x
    x = 573,026,095.60/30,191.92
  6. Step 6: Final answer
    x = 18,979.45

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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.