Home / 20,149,251.20-30,223,876.80-12,087,094.40

Finding the Fourth Proportional to 20,149,251.20, 30,223,876.80 and 12,087,094.40

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Solution

The fourth proportional to 20,149,251.20, 30,223,876.80 and 12,087,094.40 is: 18,130,641.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149,251.20 : 30,223,876.80 = 12,087,094.40 : x
  2. Step 2: Convert to fraction form
    20,149,251.20/30,223,876.80 = 12,087,094.40/x
  3. Step 3: Cross multiply
    20,149,251.20x = 30,223,876.80 × 12,087,094.40
  4. Step 4: Simplify right side
    20,149,251.20x = 365,318,852,015,569.94
  5. Step 5: Solve for x
    x = 365,318,852,015,569.94/20,149,251.20
  6. Step 6: Final answer
    x = 18,130,641.60

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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.