Home / 28,274.12-38,971-21,466.04

Finding the Fourth Proportional to 28,274.12, 38,971 and 21,466.04

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Solution

The fourth proportional to 28,274.12, 38,971 and 21,466.04 is: 29,587.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,274.12 : 38,971 = 21,466.04 : x
  2. Step 2: Convert to fraction form
    28,274.12/38,971 = 21,466.04/x
  3. Step 3: Cross multiply
    28,274.12x = 38,971 × 21,466.04
  4. Step 4: Simplify right side
    28,274.12x = 836,553,044.84
  5. Step 5: Solve for x
    x = 836,553,044.84/28,274.12
  6. Step 6: Final answer
    x = 29,587.24

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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.