Home / 13,255.78-18,274.14-10,543.21

Finding the Fourth Proportional to 13,255.78, 18,274.14 and 10,543.21

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Solution

The fourth proportional to 13,255.78, 18,274.14 and 10,543.21 is: 14,534.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.78 : 18,274.14 = 10,543.21 : x
  2. Step 2: Convert to fraction form
    13,255.78/18,274.14 = 10,543.21/x
  3. Step 3: Cross multiply
    13,255.78x = 18,274.14 × 10,543.21
  4. Step 4: Simplify right side
    13,255.78x = 192,668,152.70
  5. Step 5: Solve for x
    x = 192,668,152.70/13,255.78
  6. Step 6: Final answer
    x = 14,534.66

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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.