Home / 15,274.77-21,080.67-8,561.53

Finding the Fourth Proportional to 15,274.77, 21,080.67 and 8,561.53

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Solution

The fourth proportional to 15,274.77, 21,080.67 and 8,561.53 is: 11,815.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,274.77 : 21,080.67 = 8,561.53 : x
  2. Step 2: Convert to fraction form
    15,274.77/21,080.67 = 8,561.53/x
  3. Step 3: Cross multiply
    15,274.77x = 21,080.67 × 8,561.53
  4. Step 4: Simplify right side
    15,274.77x = 180,482,788.63
  5. Step 5: Solve for x
    x = 180,482,788.63/15,274.77
  6. Step 6: Final answer
    x = 11,815.75

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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.