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Finding the Fourth Proportional to 15,011.16, 20,716.66 and 8,723.13

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Solution

The fourth proportional to 15,011.16, 20,716.66 and 8,723.13 is: 12,038.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,011.16 : 20,716.66 = 8,723.13 : x
  2. Step 2: Convert to fraction form
    15,011.16/20,716.66 = 8,723.13/x
  3. Step 3: Cross multiply
    15,011.16x = 20,716.66 × 8,723.13
  4. Step 4: Simplify right side
    15,011.16x = 180,714,118.35
  5. Step 5: Solve for x
    x = 180,714,118.35/15,011.16
  6. Step 6: Final answer
    x = 12,038.65

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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.