Home / 20,160,621.20-30,240,931.80-7,381,542.80

Finding the Fourth Proportional to 20,160,621.20, 30,240,931.80 and 7,381,542.80

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Solution

The fourth proportional to 20,160,621.20, 30,240,931.80 and 7,381,542.80 is: 11,072,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160,621.20 : 30,240,931.80 = 7,381,542.80 : x
  2. Step 2: Convert to fraction form
    20,160,621.20/30,240,931.80 = 7,381,542.80/x
  3. Step 3: Cross multiply
    20,160,621.20x = 30,240,931.80 × 7,381,542.80
  4. Step 4: Simplify right side
    20,160,621.20x = 223,224,732,393,581.03
  5. Step 5: Solve for x
    x = 223,224,732,393,581.03/20,160,621.20
  6. Step 6: Final answer
    x = 11,072,314.20

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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.