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Finding the Fourth Proportional to 12,865,469.68, 17,754,348.24 and 7,064,251.45

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Solution

The fourth proportional to 12,865,469.68, 17,754,348.24 and 7,064,251.45 is: 9,748,667.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865,469.68 : 17,754,348.24 = 7,064,251.45 : x
  2. Step 2: Convert to fraction form
    12,865,469.68/17,754,348.24 = 7,064,251.45/x
  3. Step 3: Cross multiply
    12,865,469.68x = 17,754,348.24 × 7,064,251.45
  4. Step 4: Simplify right side
    12,865,469.68x = 125,421,180,298,224.94
  5. Step 5: Solve for x
    x = 125,421,180,298,224.94/12,865,469.68
  6. Step 6: Final answer
    x = 9,748,667.05

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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.