Home / 15,014,750.90-20,720,383.89-8,139,211.70

Finding the Fourth Proportional to 15,014,750.90, 20,720,383.89 and 8,139,211.70

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Solution

The fourth proportional to 15,014,750.90, 20,720,383.89 and 8,139,211.70 is: 11,232,127.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014,750.90 : 20,720,383.89 = 8,139,211.70 : x
  2. Step 2: Convert to fraction form
    15,014,750.90/20,720,383.89 = 8,139,211.70/x
  3. Step 3: Cross multiply
    15,014,750.90x = 20,720,383.89 × 8,139,211.70
  4. Step 4: Simplify right side
    15,014,750.90x = 168,647,590,985,979.53
  5. Step 5: Solve for x
    x = 168,647,590,985,979.53/15,014,750.90
  6. Step 6: Final answer
    x = 11,232,127.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.