Home / 21,292,213.80-31,938,320.70-12,306,268.20

Finding the Fourth Proportional to 21,292,213.80, 31,938,320.70 and 12,306,268.20

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Solution

The fourth proportional to 21,292,213.80, 31,938,320.70 and 12,306,268.20 is: 18,459,402.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292,213.80 : 31,938,320.70 = 12,306,268.20 : x
  2. Step 2: Convert to fraction form
    21,292,213.80/31,938,320.70 = 12,306,268.20/x
  3. Step 3: Cross multiply
    21,292,213.80x = 31,938,320.70 × 12,306,268.20
  4. Step 4: Simplify right side
    21,292,213.80x = 393,041,540,391,811.69
  5. Step 5: Solve for x
    x = 393,041,540,391,811.69/21,292,213.80
  6. Step 6: Final answer
    x = 18,459,402.30

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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.