Home / 18,191,715.60-27,288,010.80-5,412,637.20

Finding the Fourth Proportional to 18,191,715.60, 27,288,010.80 and 5,412,637.20

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Solution

The fourth proportional to 18,191,715.60, 27,288,010.80 and 5,412,637.20 is: 8,119,085.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191,715.60 : 27,288,010.80 = 5,412,637.20 : x
  2. Step 2: Convert to fraction form
    18,191,715.60/27,288,010.80 = 5,412,637.20/x
  3. Step 3: Cross multiply
    18,191,715.60x = 27,288,010.80 × 5,412,637.20
  4. Step 4: Simplify right side
    18,191,715.60x = 147,700,102,370,081.78
  5. Step 5: Solve for x
    x = 147,700,102,370,081.78/18,191,715.60
  6. Step 6: Final answer
    x = 8,119,085.94

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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.