Home / 20,954,937.60-31,369,420.80-12,430,886.40

Finding the Fourth Proportional to 20,954,937.60, 31,369,420.80 and 12,430,886.40

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Solution

The fourth proportional to 20,954,937.60, 31,369,420.80 and 12,430,886.40 is: 18,608,965.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954,937.60 : 31,369,420.80 = 12,430,886.40 : x
  2. Step 2: Convert to fraction form
    20,954,937.60/31,369,420.80 = 12,430,886.40/x
  3. Step 3: Cross multiply
    20,954,937.60x = 31,369,420.80 × 12,430,886.40
  4. Step 4: Simplify right side
    20,954,937.60x = 389,949,706,398,597.12
  5. Step 5: Solve for x
    x = 389,949,706,398,597.12/20,954,937.60
  6. Step 6: Final answer
    x = 18,608,965.29

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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.