Home / 10,341,821.20-15,512,731.80-5,239,987.60

Finding the Fourth Proportional to 10,341,821.20, 15,512,731.80 and 5,239,987.60

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Solution

The fourth proportional to 10,341,821.20, 15,512,731.80 and 5,239,987.60 is: 7,859,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,341,821.20 : 15,512,731.80 = 5,239,987.60 : x
  2. Step 2: Convert to fraction form
    10,341,821.20/15,512,731.80 = 5,239,987.60/x
  3. Step 3: Cross multiply
    10,341,821.20x = 15,512,731.80 × 5,239,987.60
  4. Step 4: Simplify right side
    10,341,821.20x = 81,286,522,274,125.67
  5. Step 5: Solve for x
    x = 81,286,522,274,125.67/10,341,821.20
  6. Step 6: Final answer
    x = 7,859,981.40

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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.