Home / 15,689.28-21,653.28-10,116.48

Finding the Fourth Proportional to 15,689.28, 21,653.28 and 10,116.48

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Solution

The fourth proportional to 15,689.28, 21,653.28 and 10,116.48 is: 13,962.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,689.28 : 21,653.28 = 10,116.48 : x
  2. Step 2: Convert to fraction form
    15,689.28/21,653.28 = 10,116.48/x
  3. Step 3: Cross multiply
    15,689.28x = 21,653.28 × 10,116.48
  4. Step 4: Simplify right side
    15,689.28x = 219,054,974.05
  5. Step 5: Solve for x
    x = 219,054,974.05/15,689.28
  6. Step 6: Final answer
    x = 13,962.08

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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.