Home / 21,197.08-29,255.02-12,699.55

Finding the Fourth Proportional to 21,197.08, 29,255.02 and 12,699.55

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Solution

The fourth proportional to 21,197.08, 29,255.02 and 12,699.55 is: 17,527.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.08 : 29,255.02 = 12,699.55 : x
  2. Step 2: Convert to fraction form
    21,197.08/29,255.02 = 12,699.55/x
  3. Step 3: Cross multiply
    21,197.08x = 29,255.02 × 12,699.55
  4. Step 4: Simplify right side
    21,197.08x = 371,525,594.06
  5. Step 5: Solve for x
    x = 371,525,594.06/21,197.08
  6. Step 6: Final answer
    x = 17,527.21

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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.