Home / 21,438,345.60-32,182,401.60-12,928,291.20

Finding the Fourth Proportional to 21,438,345.60, 32,182,401.60 and 12,928,291.20

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Solution

The fourth proportional to 21,438,345.60, 32,182,401.60 and 12,928,291.20 is: 19,407,442.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438,345.60 : 32,182,401.60 = 12,928,291.20 : x
  2. Step 2: Convert to fraction form
    21,438,345.60/32,182,401.60 = 12,928,291.20/x
  3. Step 3: Cross multiply
    21,438,345.60x = 32,182,401.60 × 12,928,291.20
  4. Step 4: Simplify right side
    21,438,345.60x = 416,063,459,400,145.94
  5. Step 5: Solve for x
    x = 416,063,459,400,145.94/21,438,345.60
  6. Step 6: Final answer
    x = 19,407,442.49

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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.