Home / 15,347.13-21,178.83-8,632.76

Finding the Fourth Proportional to 15,347.13, 21,178.83 and 8,632.76

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Solution

The fourth proportional to 15,347.13, 21,178.83 and 8,632.76 is: 11,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.13 : 21,178.83 = 8,632.76 : x
  2. Step 2: Convert to fraction form
    15,347.13/21,178.83 = 8,632.76/x
  3. Step 3: Cross multiply
    15,347.13x = 21,178.83 × 8,632.76
  4. Step 4: Simplify right side
    15,347.13x = 182,831,765.66
  5. Step 5: Solve for x
    x = 182,831,765.66/15,347.13
  6. Step 6: Final answer
    x = 11,913.09

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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.