Home / 13,972,340.90-20,916,520.95-8,289,640.10

Finding the Fourth Proportional to 13,972,340.90, 20,916,520.95 and 8,289,640.10

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Solution

The fourth proportional to 13,972,340.90, 20,916,520.95 and 8,289,640.10 is: 12,409,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972,340.90 : 20,916,520.95 = 8,289,640.10 : x
  2. Step 2: Convert to fraction form
    13,972,340.90/20,916,520.95 = 8,289,640.10/x
  3. Step 3: Cross multiply
    13,972,340.90x = 20,916,520.95 × 8,289,640.10
  4. Step 4: Simplify right side
    13,972,340.90x = 173,390,430,819,610.09
  5. Step 5: Solve for x
    x = 173,390,430,819,610.09/13,972,340.90
  6. Step 6: Final answer
    x = 12,409,547.70

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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.