Home / 13,445.87-20,151.28-6,866.51

Finding the Fourth Proportional to 13,445.87, 20,151.28 and 6,866.51

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Solution

The fourth proportional to 13,445.87, 20,151.28 and 6,866.51 is: 10,290.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.87 : 20,151.28 = 6,866.51 : x
  2. Step 2: Convert to fraction form
    13,445.87/20,151.28 = 6,866.51/x
  3. Step 3: Cross multiply
    13,445.87x = 20,151.28 × 6,866.51
  4. Step 4: Simplify right side
    13,445.87x = 138,368,965.63
  5. Step 5: Solve for x
    x = 138,368,965.63/13,445.87
  6. Step 6: Final answer
    x = 10,290.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.