Home / 21,567.64-29,758.88-12,613.40

Finding the Fourth Proportional to 21,567.64, 29,758.88 and 12,613.40

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Solution

The fourth proportional to 21,567.64, 29,758.88 and 12,613.40 is: 17,403.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,567.64 : 29,758.88 = 12,613.40 : x
  2. Step 2: Convert to fraction form
    21,567.64/29,758.88 = 12,613.40/x
  3. Step 3: Cross multiply
    21,567.64x = 29,758.88 × 12,613.40
  4. Step 4: Simplify right side
    21,567.64x = 375,360,593.93
  5. Step 5: Solve for x
    x = 375,360,593.93/21,567.64
  6. Step 6: Final answer
    x = 17,403.88

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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.