Home / 21,030,167.80-31,545,251.70-12,952,264.60

Finding the Fourth Proportional to 21,030,167.80, 31,545,251.70 and 12,952,264.60

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Solution

The fourth proportional to 21,030,167.80, 31,545,251.70 and 12,952,264.60 is: 19,428,396.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030,167.80 : 31,545,251.70 = 12,952,264.60 : x
  2. Step 2: Convert to fraction form
    21,030,167.80/31,545,251.70 = 12,952,264.60/x
  3. Step 3: Cross multiply
    21,030,167.80x = 31,545,251.70 × 12,952,264.60
  4. Step 4: Simplify right side
    21,030,167.80x = 408,582,446,891,999.81
  5. Step 5: Solve for x
    x = 408,582,446,891,999.81/21,030,167.80
  6. Step 6: Final answer
    x = 19,428,396.90

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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.