Home / 27,971.06-38,602.85-20,885.18

Finding the Fourth Proportional to 27,971.06, 38,602.85 and 20,885.18

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Solution

The fourth proportional to 27,971.06, 38,602.85 and 20,885.18 is: 28,823.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,971.06 : 38,602.85 = 20,885.18 : x
  2. Step 2: Convert to fraction form
    27,971.06/38,602.85 = 20,885.18/x
  3. Step 3: Cross multiply
    27,971.06x = 38,602.85 × 20,885.18
  4. Step 4: Simplify right side
    27,971.06x = 806,227,173.32
  5. Step 5: Solve for x
    x = 806,227,173.32/27,971.06
  6. Step 6: Final answer
    x = 28,823.62

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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.