Home / 20,781,368.10-31,158,848.34-18,227,711.88

Finding the Fourth Proportional to 20,781,368.10, 31,158,848.34 and 18,227,711.88

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Solution

The fourth proportional to 20,781,368.10, 31,158,848.34 and 18,227,711.88 is: 27,329,986.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,368.10 : 31,158,848.34 = 18,227,711.88 : x
  2. Step 2: Convert to fraction form
    20,781,368.10/31,158,848.34 = 18,227,711.88/x
  3. Step 3: Cross multiply
    20,781,368.10x = 31,158,848.34 × 18,227,711.88
  4. Step 4: Simplify right side
    20,781,368.10x = 567,954,510,054,136.25
  5. Step 5: Solve for x
    x = 567,954,510,054,136.25/20,781,368.10
  6. Step 6: Final answer
    x = 27,329,986.52

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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.