Home / 20,838,845.40-31,275,982.80-9,342,005.10

Finding the Fourth Proportional to 20,838,845.40, 31,275,982.80 and 9,342,005.10

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Solution

The fourth proportional to 20,838,845.40, 31,275,982.80 and 9,342,005.10 is: 14,020,949.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838,845.40 : 31,275,982.80 = 9,342,005.10 : x
  2. Step 2: Convert to fraction form
    20,838,845.40/31,275,982.80 = 9,342,005.10/x
  3. Step 3: Cross multiply
    20,838,845.40x = 31,275,982.80 × 9,342,005.10
  4. Step 4: Simplify right side
    20,838,845.40x = 292,180,390,825,112.25
  5. Step 5: Solve for x
    x = 292,180,390,825,112.25/20,838,845.40
  6. Step 6: Final answer
    x = 14,020,949.11

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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.