Home / 21,243,521.80-31,865,234.10-9,105,114.52

Finding the Fourth Proportional to 21,243,521.80, 31,865,234.10 and 9,105,114.52

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Solution

The fourth proportional to 21,243,521.80, 31,865,234.10 and 9,105,114.52 is: 13,657,650.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243,521.80 : 31,865,234.10 = 9,105,114.52 : x
  2. Step 2: Convert to fraction form
    21,243,521.80/31,865,234.10 = 9,105,114.52/x
  3. Step 3: Cross multiply
    21,243,521.80x = 31,865,234.10 × 9,105,114.52
  4. Step 4: Simplify right side
    21,243,521.80x = 290,136,605,687,109.12
  5. Step 5: Solve for x
    x = 290,136,605,687,109.12/21,243,521.80
  6. Step 6: Final answer
    x = 13,657,650.95

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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.