Home / 51,929.90-77,894.80-12,487

Finding the Fourth Proportional to 51,929.90, 77,894.80 and 12,487

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Solution

The fourth proportional to 51,929.90, 77,894.80 and 12,487 is: 18,730.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,929.90 : 77,894.80 = 12,487 : x
  2. Step 2: Convert to fraction form
    51,929.90/77,894.80 = 12,487/x
  3. Step 3: Cross multiply
    51,929.90x = 77,894.80 × 12,487
  4. Step 4: Simplify right side
    51,929.90x = 972,672,367.60
  5. Step 5: Solve for x
    x = 972,672,367.60/51,929.90
  6. Step 6: Final answer
    x = 18,730.49

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1.5x scale

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.