Home / 15,347.36-21,178.88-8,633.28

Finding the Fourth Proportional to 15,347.36, 21,178.88 and 8,633.28

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Solution

The fourth proportional to 15,347.36, 21,178.88 and 8,633.28 is: 11,913.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.36 : 21,178.88 = 8,633.28 : x
  2. Step 2: Convert to fraction form
    15,347.36/21,178.88 = 8,633.28/x
  3. Step 3: Cross multiply
    15,347.36x = 21,178.88 × 8,633.28
  4. Step 4: Simplify right side
    15,347.36x = 182,843,201.13
  5. Step 5: Solve for x
    x = 182,843,201.13/15,347.36
  6. Step 6: Final answer
    x = 11,913.66

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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.