Home / 20,149,345.20-30,224,017.80-12,087,188.40

Finding the Fourth Proportional to 20,149,345.20, 30,224,017.80 and 12,087,188.40

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Solution

The fourth proportional to 20,149,345.20, 30,224,017.80 and 12,087,188.40 is: 18,130,782.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149,345.20 : 30,224,017.80 = 12,087,188.40 : x
  2. Step 2: Convert to fraction form
    20,149,345.20/30,224,017.80 = 12,087,188.40/x
  3. Step 3: Cross multiply
    20,149,345.20x = 30,224,017.80 × 12,087,188.40
  4. Step 4: Simplify right side
    20,149,345.20x = 365,323,397,353,553.56
  5. Step 5: Solve for x
    x = 365,323,397,353,553.56/20,149,345.20
  6. Step 6: Final answer
    x = 18,130,782.60

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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.