Home / 21,124.02-29,151.57-12,634.89

Finding the Fourth Proportional to 21,124.02, 29,151.57 and 12,634.89

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Solution

The fourth proportional to 21,124.02, 29,151.57 and 12,634.89 is: 17,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.02 : 29,151.57 = 12,634.89 : x
  2. Step 2: Convert to fraction form
    21,124.02/29,151.57 = 12,634.89/x
  3. Step 3: Cross multiply
    21,124.02x = 29,151.57 × 12,634.89
  4. Step 4: Simplify right side
    21,124.02x = 368,326,880.28
  5. Step 5: Solve for x
    x = 368,326,880.28/21,124.02
  6. Step 6: Final answer
    x = 17,436.40

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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.