Home / 15,722.88-21,695.40-12,544.08

Finding the Fourth Proportional to 15,722.88, 21,695.40 and 12,544.08

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Solution

The fourth proportional to 15,722.88, 21,695.40 and 12,544.08 is: 17,309.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.88 : 21,695.40 = 12,544.08 : x
  2. Step 2: Convert to fraction form
    15,722.88/21,695.40 = 12,544.08/x
  3. Step 3: Cross multiply
    15,722.88x = 21,695.40 × 12,544.08
  4. Step 4: Simplify right side
    15,722.88x = 272,148,833.23
  5. Step 5: Solve for x
    x = 272,148,833.23/15,722.88
  6. Step 6: Final answer
    x = 17,309.10

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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.