Home / 21,780,128.20-32,670,192.30-9,655,400.20

Finding the Fourth Proportional to 21,780,128.20, 32,670,192.30 and 9,655,400.20

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Solution

The fourth proportional to 21,780,128.20, 32,670,192.30 and 9,655,400.20 is: 14,483,100.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,128.20 : 32,670,192.30 = 9,655,400.20 : x
  2. Step 2: Convert to fraction form
    21,780,128.20/32,670,192.30 = 9,655,400.20/x
  3. Step 3: Cross multiply
    21,780,128.20x = 32,670,192.30 × 9,655,400.20
  4. Step 4: Simplify right side
    21,780,128.20x = 315,443,781,267,458.44
  5. Step 5: Solve for x
    x = 315,443,781,267,458.44/21,780,128.20
  6. Step 6: Final answer
    x = 14,483,100.30

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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.