Home / 15,709.55-21,656.86-12,494.66

Finding the Fourth Proportional to 15,709.55, 21,656.86 and 12,494.66

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Solution

The fourth proportional to 15,709.55, 21,656.86 and 12,494.66 is: 17,224.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.55 : 21,656.86 = 12,494.66 : x
  2. Step 2: Convert to fraction form
    15,709.55/21,656.86 = 12,494.66/x
  3. Step 3: Cross multiply
    15,709.55x = 21,656.86 × 12,494.66
  4. Step 4: Simplify right side
    15,709.55x = 270,594,994.08
  5. Step 5: Solve for x
    x = 270,594,994.08/15,709.55
  6. Step 6: Final answer
    x = 17,224.88

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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.