Home / 13,242.47-18,269.39-8,529.49

Finding the Fourth Proportional to 13,242.47, 18,269.39 and 8,529.49

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Solution

The fourth proportional to 13,242.47, 18,269.39 and 8,529.49 is: 11,767.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.47 : 18,269.39 = 8,529.49 : x
  2. Step 2: Convert to fraction form
    13,242.47/18,269.39 = 8,529.49/x
  3. Step 3: Cross multiply
    13,242.47x = 18,269.39 × 8,529.49
  4. Step 4: Simplify right side
    13,242.47x = 155,828,445.32
  5. Step 5: Solve for x
    x = 155,828,445.32/13,242.47
  6. Step 6: Final answer
    x = 11,767.32

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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.