Home / 27,985.66-38,612.57-19,478.23

Finding the Fourth Proportional to 27,985.66, 38,612.57 and 19,478.23

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Solution

The fourth proportional to 27,985.66, 38,612.57 and 19,478.23 is: 26,874.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.66 : 38,612.57 = 19,478.23 : x
  2. Step 2: Convert to fraction form
    27,985.66/38,612.57 = 19,478.23/x
  3. Step 3: Cross multiply
    27,985.66x = 38,612.57 × 19,478.23
  4. Step 4: Simplify right side
    27,985.66x = 752,104,325.43
  5. Step 5: Solve for x
    x = 752,104,325.43/27,985.66
  6. Step 6: Final answer
    x = 26,874.63

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Double scale
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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.