Home / 15,276.30-21,081.60-10,807.80

Finding the Fourth Proportional to 15,276.30, 21,081.60 and 10,807.80

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Solution

The fourth proportional to 15,276.30, 21,081.60 and 10,807.80 is: 14,914.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,276.30 : 21,081.60 = 10,807.80 : x
  2. Step 2: Convert to fraction form
    15,276.30/21,081.60 = 10,807.80/x
  3. Step 3: Cross multiply
    15,276.30x = 21,081.60 × 10,807.80
  4. Step 4: Simplify right side
    15,276.30x = 227,845,716.48
  5. Step 5: Solve for x
    x = 227,845,716.48/15,276.30
  6. Step 6: Final answer
    x = 14,914.98

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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.