Home / 15,347.16-21,179.40-8,632.68

Finding the Fourth Proportional to 15,347.16, 21,179.40 and 8,632.68

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Solution

The fourth proportional to 15,347.16, 21,179.40 and 8,632.68 is: 11,913.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.16 : 21,179.40 = 8,632.68 : x
  2. Step 2: Convert to fraction form
    15,347.16/21,179.40 = 8,632.68/x
  3. Step 3: Cross multiply
    15,347.16x = 21,179.40 × 8,632.68
  4. Step 4: Simplify right side
    15,347.16x = 182,834,982.79
  5. Step 5: Solve for x
    x = 182,834,982.79/15,347.16
  6. Step 6: Final answer
    x = 11,913.28

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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.