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Finding the Fourth Proportional to 15,196,598.21, 20,971,340.09 and 8,227,349.10

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Solution

The fourth proportional to 15,196,598.21, 20,971,340.09 and 8,227,349.10 is: 11,353,760.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,196,598.21 : 20,971,340.09 = 8,227,349.10 : x
  2. Step 2: Convert to fraction form
    15,196,598.21/20,971,340.09 = 8,227,349.10/x
  3. Step 3: Cross multiply
    15,196,598.21x = 20,971,340.09 × 8,227,349.10
  4. Step 4: Simplify right side
    15,196,598.21x = 172,538,535,974,118.69
  5. Step 5: Solve for x
    x = 172,538,535,974,118.69/15,196,598.21
  6. Step 6: Final answer
    x = 11,353,760.47

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1.5x scale

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.