Home / 15,667.74-21,609.26-9,702.72

Finding the Fourth Proportional to 15,667.74, 21,609.26 and 9,702.72

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Solution

The fourth proportional to 15,667.74, 21,609.26 and 9,702.72 is: 13,382.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,667.74 : 21,609.26 = 9,702.72 : x
  2. Step 2: Convert to fraction form
    15,667.74/21,609.26 = 9,702.72/x
  3. Step 3: Cross multiply
    15,667.74x = 21,609.26 × 9,702.72
  4. Step 4: Simplify right side
    15,667.74x = 209,668,442.63
  5. Step 5: Solve for x
    x = 209,668,442.63/15,667.74
  6. Step 6: Final answer
    x = 13,382.18

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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.