Home / 27,872.60-38,457.87-15,934.01

Finding the Fourth Proportional to 27,872.60, 38,457.87 and 15,934.01

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Solution

The fourth proportional to 27,872.60, 38,457.87 and 15,934.01 is: 21,985.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,872.60 : 38,457.87 = 15,934.01 : x
  2. Step 2: Convert to fraction form
    27,872.60/38,457.87 = 15,934.01/x
  3. Step 3: Cross multiply
    27,872.60x = 38,457.87 × 15,934.01
  4. Step 4: Simplify right side
    27,872.60x = 612,788,085.16
  5. Step 5: Solve for x
    x = 612,788,085.16/27,872.60
  6. Step 6: Final answer
    x = 21,985.32

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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.