Home / 15,675.18-21,630.18-9,704.64

Finding the Fourth Proportional to 15,675.18, 21,630.18 and 9,704.64

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Solution

The fourth proportional to 15,675.18, 21,630.18 and 9,704.64 is: 13,391.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,675.18 : 21,630.18 = 9,704.64 : x
  2. Step 2: Convert to fraction form
    15,675.18/21,630.18 = 9,704.64/x
  3. Step 3: Cross multiply
    15,675.18x = 21,630.18 × 9,704.64
  4. Step 4: Simplify right side
    15,675.18x = 209,913,110.04
  5. Step 5: Solve for x
    x = 209,913,110.04/15,675.18
  6. Step 6: Final answer
    x = 13,391.43

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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.