Home / 20,869,165.80-31,266,423.90-12,881,658.60

Finding the Fourth Proportional to 20,869,165.80, 31,266,423.90 and 12,881,658.60

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Solution

The fourth proportional to 20,869,165.80, 31,266,423.90 and 12,881,658.60 is: 19,299,448.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869,165.80 : 31,266,423.90 = 12,881,658.60 : x
  2. Step 2: Convert to fraction form
    20,869,165.80/31,266,423.90 = 12,881,658.60/x
  3. Step 3: Cross multiply
    20,869,165.80x = 31,266,423.90 × 12,881,658.60
  4. Step 4: Simplify right side
    20,869,165.80x = 402,763,398,322,680.50
  5. Step 5: Solve for x
    x = 402,763,398,322,680.50/20,869,165.80
  6. Step 6: Final answer
    x = 19,299,448.87

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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.