Home / 12,128,545.90-18,150,828.45-11,120,776.30

Finding the Fourth Proportional to 12,128,545.90, 18,150,828.45 and 11,120,776.30

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Solution

The fourth proportional to 12,128,545.90, 18,150,828.45 and 11,120,776.30 is: 16,642,663.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,545.90 : 18,150,828.45 = 11,120,776.30 : x
  2. Step 2: Convert to fraction form
    12,128,545.90/18,150,828.45 = 11,120,776.30/x
  3. Step 3: Cross multiply
    12,128,545.90x = 18,150,828.45 × 11,120,776.30
  4. Step 4: Simplify right side
    12,128,545.90x = 201,851,302,852,125.75
  5. Step 5: Solve for x
    x = 201,851,302,852,125.75/12,128,545.90
  6. Step 6: Final answer
    x = 16,642,663.06

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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.