Home / 10,643.90-15,965.88-3,718.40

Finding the Fourth Proportional to 10,643.90, 15,965.88 and 3,718.40

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Solution

The fourth proportional to 10,643.90, 15,965.88 and 3,718.40 is: 5,577.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,643.90 : 15,965.88 = 3,718.40 : x
  2. Step 2: Convert to fraction form
    10,643.90/15,965.88 = 3,718.40/x
  3. Step 3: Cross multiply
    10,643.90x = 15,965.88 × 3,718.40
  4. Step 4: Simplify right side
    10,643.90x = 59,367,528.19
  5. Step 5: Solve for x
    x = 59,367,528.19/10,643.90
  6. Step 6: Final answer
    x = 5,577.61

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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.