Home / 15,018.47-20,724.66-8,303.71

Finding the Fourth Proportional to 15,018.47, 20,724.66 and 8,303.71

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Solution

The fourth proportional to 15,018.47, 20,724.66 and 8,303.71 is: 11,458.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.47 : 20,724.66 = 8,303.71 : x
  2. Step 2: Convert to fraction form
    15,018.47/20,724.66 = 8,303.71/x
  3. Step 3: Cross multiply
    15,018.47x = 20,724.66 × 8,303.71
  4. Step 4: Simplify right side
    15,018.47x = 172,091,566.49
  5. Step 5: Solve for x
    x = 172,091,566.49/15,018.47
  6. Step 6: Final answer
    x = 11,458.66

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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.