Home / 12,247.47-18,356.63-8,529.57

Finding the Fourth Proportional to 12,247.47, 18,356.63 and 8,529.57

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Solution

The fourth proportional to 12,247.47, 18,356.63 and 8,529.57 is: 12,784.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.47 : 18,356.63 = 8,529.57 : x
  2. Step 2: Convert to fraction form
    12,247.47/18,356.63 = 8,529.57/x
  3. Step 3: Cross multiply
    12,247.47x = 18,356.63 × 8,529.57
  4. Step 4: Simplify right side
    12,247.47x = 156,574,117.90
  5. Step 5: Solve for x
    x = 156,574,117.90/12,247.47
  6. Step 6: Final answer
    x = 12,784.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.