Home / 21,005,892.40-31,490,176.20-12,477,175.60

Finding the Fourth Proportional to 21,005,892.40, 31,490,176.20 and 12,477,175.60

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Solution

The fourth proportional to 21,005,892.40, 31,490,176.20 and 12,477,175.60 is: 18,704,678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,892.40 : 31,490,176.20 = 12,477,175.60 : x
  2. Step 2: Convert to fraction form
    21,005,892.40/31,490,176.20 = 12,477,175.60/x
  3. Step 3: Cross multiply
    21,005,892.40x = 31,490,176.20 × 12,477,175.60
  4. Step 4: Simplify right side
    21,005,892.40x = 392,908,458,122,340.69
  5. Step 5: Solve for x
    x = 392,908,458,122,340.69/21,005,892.40
  6. Step 6: Final answer
    x = 18,704,678.22

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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.