Home / 15,512.13-21,397.14-13,527.45

Finding the Fourth Proportional to 15,512.13, 21,397.14 and 13,527.45

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Solution

The fourth proportional to 15,512.13, 21,397.14 and 13,527.45 is: 18,659.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.13 : 21,397.14 = 13,527.45 : x
  2. Step 2: Convert to fraction form
    15,512.13/21,397.14 = 13,527.45/x
  3. Step 3: Cross multiply
    15,512.13x = 21,397.14 × 13,527.45
  4. Step 4: Simplify right side
    15,512.13x = 289,448,741.49
  5. Step 5: Solve for x
    x = 289,448,741.49/15,512.13
  6. Step 6: Final answer
    x = 18,659.51

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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.