Home / 21,270,643.20-31,905,964.80-10,508,962.95

Finding the Fourth Proportional to 21,270,643.20, 31,905,964.80 and 10,508,962.95

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Solution

The fourth proportional to 21,270,643.20, 31,905,964.80 and 10,508,962.95 is: 15,763,444.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270,643.20 : 31,905,964.80 = 10,508,962.95 : x
  2. Step 2: Convert to fraction form
    21,270,643.20/31,905,964.80 = 10,508,962.95/x
  3. Step 3: Cross multiply
    21,270,643.20x = 31,905,964.80 × 10,508,962.95
  4. Step 4: Simplify right side
    21,270,643.20x = 335,298,601,967,204.12
  5. Step 5: Solve for x
    x = 335,298,601,967,204.12/21,270,643.20
  6. Step 6: Final answer
    x = 15,763,444.43

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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.