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Finding the Fourth Proportional to 12,832,978.60, 19,249,467.90 and 8,055,404.20

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Solution

The fourth proportional to 12,832,978.60, 19,249,467.90 and 8,055,404.20 is: 12,083,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,832,978.60 : 19,249,467.90 = 8,055,404.20 : x
  2. Step 2: Convert to fraction form
    12,832,978.60/19,249,467.90 = 8,055,404.20/x
  3. Step 3: Cross multiply
    12,832,978.60x = 19,249,467.90 × 8,055,404.20
  4. Step 4: Simplify right side
    12,832,978.60x = 155,062,244,569,425.16
  5. Step 5: Solve for x
    x = 155,062,244,569,425.16/12,832,978.60
  6. Step 6: Final answer
    x = 12,083,106.30

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Similar ratio
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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.