Home / 20,499.66-28,289.90-11,547.48

Finding the Fourth Proportional to 20,499.66, 28,289.90 and 11,547.48

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Solution

The fourth proportional to 20,499.66, 28,289.90 and 11,547.48 is: 15,935.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.66 : 28,289.90 = 11,547.48 : x
  2. Step 2: Convert to fraction form
    20,499.66/28,289.90 = 11,547.48/x
  3. Step 3: Cross multiply
    20,499.66x = 28,289.90 × 11,547.48
  4. Step 4: Simplify right side
    20,499.66x = 326,677,054.45
  5. Step 5: Solve for x
    x = 326,677,054.45/20,499.66
  6. Step 6: Final answer
    x = 15,935.73

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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.