Home / 18,663,849.32-27,985,643.26-8,416,719.60

Finding the Fourth Proportional to 18,663,849.32, 27,985,643.26 and 8,416,719.60

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Solution

The fourth proportional to 18,663,849.32, 27,985,643.26 and 8,416,719.60 is: 12,620,510.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663,849.32 : 27,985,643.26 = 8,416,719.60 : x
  2. Step 2: Convert to fraction form
    18,663,849.32/27,985,643.26 = 8,416,719.60/x
  3. Step 3: Cross multiply
    18,663,849.32x = 27,985,643.26 × 8,416,719.60
  4. Step 4: Simplify right side
    18,663,849.32x = 235,547,312,145,049.91
  5. Step 5: Solve for x
    x = 235,547,312,145,049.91/18,663,849.32
  6. Step 6: Final answer
    x = 12,620,510.81

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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.