Home / 21,458,331.60-29,610,258.12-12,291,360.72

Finding the Fourth Proportional to 21,458,331.60, 29,610,258.12 and 12,291,360.72

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Solution

The fourth proportional to 21,458,331.60, 29,610,258.12 and 12,291,360.72 is: 16,960,795.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,458,331.60 : 29,610,258.12 = 12,291,360.72 : x
  2. Step 2: Convert to fraction form
    21,458,331.60/29,610,258.12 = 12,291,360.72/x
  3. Step 3: Cross multiply
    21,458,331.60x = 29,610,258.12 × 12,291,360.72
  4. Step 4: Simplify right side
    21,458,331.60x = 363,950,363,565,229.06
  5. Step 5: Solve for x
    x = 363,950,363,565,229.06/21,458,331.60
  6. Step 6: Final answer
    x = 16,960,795.01

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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.