Home / 15,312,455.96-21,131,667.84-8,787,279

Finding the Fourth Proportional to 15,312,455.96, 21,131,667.84 and 8,787,279

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Solution

The fourth proportional to 15,312,455.96, 21,131,667.84 and 8,787,279 is: 12,126,719.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312,455.96 : 21,131,667.84 = 8,787,279 : x
  2. Step 2: Convert to fraction form
    15,312,455.96/21,131,667.84 = 8,787,279/x
  3. Step 3: Cross multiply
    15,312,455.96x = 21,131,667.84 × 8,787,279
  4. Step 4: Simplify right side
    15,312,455.96x = 185,689,861,045,407.34
  5. Step 5: Solve for x
    x = 185,689,861,045,407.34/15,312,455.96
  6. Step 6: Final answer
    x = 12,126,719.68

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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.