Home / 15,758.56-21,775.80-11,502.40

Finding the Fourth Proportional to 15,758.56, 21,775.80 and 11,502.40

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Solution

The fourth proportional to 15,758.56, 21,775.80 and 11,502.40 is: 15,894.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,758.56 : 21,775.80 = 11,502.40 : x
  2. Step 2: Convert to fraction form
    15,758.56/21,775.80 = 11,502.40/x
  3. Step 3: Cross multiply
    15,758.56x = 21,775.80 × 11,502.40
  4. Step 4: Simplify right side
    15,758.56x = 250,473,961.92
  5. Step 5: Solve for x
    x = 250,473,961.92/15,758.56
  6. Step 6: Final answer
    x = 15,894.47

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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.