Home / 21,287,412.30-31,931,118.45-6,141,837.90

Finding the Fourth Proportional to 21,287,412.30, 31,931,118.45 and 6,141,837.90

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Solution

The fourth proportional to 21,287,412.30, 31,931,118.45 and 6,141,837.90 is: 9,212,756.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287,412.30 : 31,931,118.45 = 6,141,837.90 : x
  2. Step 2: Convert to fraction form
    21,287,412.30/31,931,118.45 = 6,141,837.90/x
  3. Step 3: Cross multiply
    21,287,412.30x = 31,931,118.45 × 6,141,837.90
  4. Step 4: Simplify right side
    21,287,412.30x = 196,115,753,485,599.25
  5. Step 5: Solve for x
    x = 196,115,753,485,599.25/21,287,412.30
  6. Step 6: Final answer
    x = 9,212,756.85

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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.