Home / 21,702.79-29,948.97-12,271.51

Finding the Fourth Proportional to 21,702.79, 29,948.97 and 12,271.51

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Solution

The fourth proportional to 21,702.79, 29,948.97 and 12,271.51 is: 16,934.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.79 : 29,948.97 = 12,271.51 : x
  2. Step 2: Convert to fraction form
    21,702.79/29,948.97 = 12,271.51/x
  3. Step 3: Cross multiply
    21,702.79x = 29,948.97 × 12,271.51
  4. Step 4: Simplify right side
    21,702.79x = 367,519,084.84
  5. Step 5: Solve for x
    x = 367,519,084.84/21,702.79
  6. Step 6: Final answer
    x = 16,934.19

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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.