Home / 21,248,803.80-31,881,253.86-12,735,250.20

Finding the Fourth Proportional to 21,248,803.80, 31,881,253.86 and 12,735,250.20

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Solution

The fourth proportional to 21,248,803.80, 31,881,253.86 and 12,735,250.20 is: 19,107,698.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248,803.80 : 31,881,253.86 = 12,735,250.20 : x
  2. Step 2: Convert to fraction form
    21,248,803.80/31,881,253.86 = 12,735,250.20/x
  3. Step 3: Cross multiply
    21,248,803.80x = 31,881,253.86 × 12,735,250.20
  4. Step 4: Simplify right side
    21,248,803.80x = 406,015,744,596,815.75
  5. Step 5: Solve for x
    x = 406,015,744,596,815.75/21,248,803.80
  6. Step 6: Final answer
    x = 19,107,698.88

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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.