Home / 26,347.20-39,501.36-12,480

Finding the Fourth Proportional to 26,347.20, 39,501.36 and 12,480

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Solution

The fourth proportional to 26,347.20, 39,501.36 and 12,480 is: 18,710.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,347.20 : 39,501.36 = 12,480 : x
  2. Step 2: Convert to fraction form
    26,347.20/39,501.36 = 12,480/x
  3. Step 3: Cross multiply
    26,347.20x = 39,501.36 × 12,480
  4. Step 4: Simplify right side
    26,347.20x = 492,976,972.80
  5. Step 5: Solve for x
    x = 492,976,972.80/26,347.20
  6. Step 6: Final answer
    x = 18,710.79

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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.