Home / 15,382.22-21,215.12-10,343.00

Finding the Fourth Proportional to 15,382.22, 21,215.12 and 10,343.00

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Solution

The fourth proportional to 15,382.22, 21,215.12 and 10,343.00 is: 14,265.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.22 : 21,215.12 = 10,343.00 : x
  2. Step 2: Convert to fraction form
    15,382.22/21,215.12 = 10,343.00/x
  3. Step 3: Cross multiply
    15,382.22x = 21,215.12 × 10,343.00
  4. Step 4: Simplify right side
    15,382.22x = 219,427,828.37
  5. Step 5: Solve for x
    x = 219,427,828.37/15,382.22
  6. Step 6: Final answer
    x = 14,265.03

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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.