Home / 21,055,350.60-31,583,025.90-12,871,159.20

Finding the Fourth Proportional to 21,055,350.60, 31,583,025.90 and 12,871,159.20

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Solution

The fourth proportional to 21,055,350.60, 31,583,025.90 and 12,871,159.20 is: 19,306,738.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055,350.60 : 31,583,025.90 = 12,871,159.20 : x
  2. Step 2: Convert to fraction form
    21,055,350.60/31,583,025.90 = 12,871,159.20/x
  3. Step 3: Cross multiply
    21,055,350.60x = 31,583,025.90 × 12,871,159.20
  4. Step 4: Simplify right side
    21,055,350.60x = 406,510,154,376,623.25
  5. Step 5: Solve for x
    x = 406,510,154,376,623.25/21,055,350.60
  6. Step 6: Final answer
    x = 19,306,738.80

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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.