Home / 15,643.80-21,592.26-9,671.88

Finding the Fourth Proportional to 15,643.80, 21,592.26 and 9,671.88

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Solution

The fourth proportional to 15,643.80, 21,592.26 and 9,671.88 is: 13,349.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.80 : 21,592.26 = 9,671.88 : x
  2. Step 2: Convert to fraction form
    15,643.80/21,592.26 = 9,671.88/x
  3. Step 3: Cross multiply
    15,643.80x = 21,592.26 × 9,671.88
  4. Step 4: Simplify right side
    15,643.80x = 208,837,747.65
  5. Step 5: Solve for x
    x = 208,837,747.65/15,643.80
  6. Step 6: Final answer
    x = 13,349.55

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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.