Home / 20,728,117.60-31,092,176.40-9,939,865.30

Finding the Fourth Proportional to 20,728,117.60, 31,092,176.40 and 9,939,865.30

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Solution

The fourth proportional to 20,728,117.60, 31,092,176.40 and 9,939,865.30 is: 14,909,797.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,117.60 : 31,092,176.40 = 9,939,865.30 : x
  2. Step 2: Convert to fraction form
    20,728,117.60/31,092,176.40 = 9,939,865.30/x
  3. Step 3: Cross multiply
    20,728,117.60x = 31,092,176.40 × 9,939,865.30
  4. Step 4: Simplify right side
    20,728,117.60x = 309,052,045,299,838.94
  5. Step 5: Solve for x
    x = 309,052,045,299,838.94/20,728,117.60
  6. Step 6: Final answer
    x = 14,909,797.95

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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.