Home / 20,772.64-28,666.47-11,341.81

Finding the Fourth Proportional to 20,772.64, 28,666.47 and 11,341.81

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Solution

The fourth proportional to 20,772.64, 28,666.47 and 11,341.81 is: 15,651.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.64 : 28,666.47 = 11,341.81 : x
  2. Step 2: Convert to fraction form
    20,772.64/28,666.47 = 11,341.81/x
  3. Step 3: Cross multiply
    20,772.64x = 28,666.47 × 11,341.81
  4. Step 4: Simplify right side
    20,772.64x = 325,129,656.11
  5. Step 5: Solve for x
    x = 325,129,656.11/20,772.64
  6. Step 6: Final answer
    x = 15,651.82

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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.