Home / 15,377.37-21,220.84-8,663.10

Finding the Fourth Proportional to 15,377.37, 21,220.84 and 8,663.10

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Solution

The fourth proportional to 15,377.37, 21,220.84 and 8,663.10 is: 11,955.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.37 : 21,220.84 = 8,663.10 : x
  2. Step 2: Convert to fraction form
    15,377.37/21,220.84 = 8,663.10/x
  3. Step 3: Cross multiply
    15,377.37x = 21,220.84 × 8,663.10
  4. Step 4: Simplify right side
    15,377.37x = 183,838,309.62
  5. Step 5: Solve for x
    x = 183,838,309.62/15,377.37
  6. Step 6: Final answer
    x = 11,955.12

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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.