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Finding the Fourth Proportional to 12,574,264.17, 18,847,968.08 and 7,171,280.67

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Solution

The fourth proportional to 12,574,264.17, 18,847,968.08 and 7,171,280.67 is: 10,749,262.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574,264.17 : 18,847,968.08 = 7,171,280.67 : x
  2. Step 2: Convert to fraction form
    12,574,264.17/18,847,968.08 = 7,171,280.67/x
  3. Step 3: Cross multiply
    12,574,264.17x = 18,847,968.08 × 7,171,280.67
  4. Step 4: Simplify right side
    12,574,264.17x = 135,164,069,125,024.61
  5. Step 5: Solve for x
    x = 135,164,069,125,024.61/12,574,264.17
  6. Step 6: Final answer
    x = 10,749,262.72

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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.