Home / 15,279.88-21,079.54-10,807.46

Finding the Fourth Proportional to 15,279.88, 21,079.54 and 10,807.46

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Solution

The fourth proportional to 15,279.88, 21,079.54 and 10,807.46 is: 14,909.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.88 : 21,079.54 = 10,807.46 : x
  2. Step 2: Convert to fraction form
    15,279.88/21,079.54 = 10,807.46/x
  3. Step 3: Cross multiply
    15,279.88x = 21,079.54 × 10,807.46
  4. Step 4: Simplify right side
    15,279.88x = 227,816,285.37
  5. Step 5: Solve for x
    x = 227,816,285.37/15,279.88
  6. Step 6: Final answer
    x = 14,909.56

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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.