Home / 15,371.59-21,214.30-8,997.79

Finding the Fourth Proportional to 15,371.59, 21,214.30 and 8,997.79

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Solution

The fourth proportional to 15,371.59, 21,214.30 and 8,997.79 is: 12,417.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.59 : 21,214.30 = 8,997.79 : x
  2. Step 2: Convert to fraction form
    15,371.59/21,214.30 = 8,997.79/x
  3. Step 3: Cross multiply
    15,371.59x = 21,214.30 × 8,997.79
  4. Step 4: Simplify right side
    15,371.59x = 190,881,831.87
  5. Step 5: Solve for x
    x = 190,881,831.87/15,371.59
  6. Step 6: Final answer
    x = 12,417.84

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1.5x scale

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.