Home / 15,323.64-21,147.18-8,609.40

Finding the Fourth Proportional to 15,323.64, 21,147.18 and 8,609.40

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Solution

The fourth proportional to 15,323.64, 21,147.18 and 8,609.40 is: 11,881.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.64 : 21,147.18 = 8,609.40 : x
  2. Step 2: Convert to fraction form
    15,323.64/21,147.18 = 8,609.40/x
  3. Step 3: Cross multiply
    15,323.64x = 21,147.18 × 8,609.40
  4. Step 4: Simplify right side
    15,323.64x = 182,064,531.49
  5. Step 5: Solve for x
    x = 182,064,531.49/15,323.64
  6. Step 6: Final answer
    x = 11,881.28

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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.