Home / 21,458,329.60-29,610,255.36-12,291,358.72

Finding the Fourth Proportional to 21,458,329.60, 29,610,255.36 and 12,291,358.72

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Solution

The fourth proportional to 21,458,329.60, 29,610,255.36 and 12,291,358.72 is: 16,960,792.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,458,329.60 : 29,610,255.36 = 12,291,358.72 : x
  2. Step 2: Convert to fraction form
    21,458,329.60/29,610,255.36 = 12,291,358.72/x
  3. Step 3: Cross multiply
    21,458,329.60x = 29,610,255.36 × 12,291,358.72
  4. Step 4: Simplify right side
    21,458,329.60x = 363,950,270,420,562.75
  5. Step 5: Solve for x
    x = 363,950,270,420,562.75/21,458,329.60
  6. Step 6: Final answer
    x = 16,960,792.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.