Home / 15,758.87-21,743.43-10,380.74

Finding the Fourth Proportional to 15,758.87, 21,743.43 and 10,380.74

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Solution

The fourth proportional to 15,758.87, 21,743.43 and 10,380.74 is: 14,322.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,758.87 : 21,743.43 = 10,380.74 : x
  2. Step 2: Convert to fraction form
    15,758.87/21,743.43 = 10,380.74/x
  3. Step 3: Cross multiply
    15,758.87x = 21,743.43 × 10,380.74
  4. Step 4: Simplify right side
    15,758.87x = 225,712,784.82
  5. Step 5: Solve for x
    x = 225,712,784.82/15,758.87
  6. Step 6: Final answer
    x = 14,322.91

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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.