Home / 15,366.72-21,206.16-8,742.72

Finding the Fourth Proportional to 15,366.72, 21,206.16 and 8,742.72

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Solution

The fourth proportional to 15,366.72, 21,206.16 and 8,742.72 is: 12,065.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,366.72 : 21,206.16 = 8,742.72 : x
  2. Step 2: Convert to fraction form
    15,366.72/21,206.16 = 8,742.72/x
  3. Step 3: Cross multiply
    15,366.72x = 21,206.16 × 8,742.72
  4. Step 4: Simplify right side
    15,366.72x = 185,399,519.16
  5. Step 5: Solve for x
    x = 185,399,519.16/15,366.72
  6. Step 6: Final answer
    x = 12,065.00

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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.