Home / 47,988.95-71,985.11-12,929.45

Finding the Fourth Proportional to 47,988.95, 71,985.11 and 12,929.45

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Solution

The fourth proportional to 47,988.95, 71,985.11 and 12,929.45 is: 19,394.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,988.95 : 71,985.11 = 12,929.45 : x
  2. Step 2: Convert to fraction form
    47,988.95/71,985.11 = 12,929.45/x
  3. Step 3: Cross multiply
    47,988.95x = 71,985.11 × 12,929.45
  4. Step 4: Simplify right side
    47,988.95x = 930,727,455.92
  5. Step 5: Solve for x
    x = 930,727,455.92/47,988.95
  6. Step 6: Final answer
    x = 19,394.62

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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.