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Finding the Fourth Proportional to 27,590, 38,074.32 and 15,014.72

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Solution

The fourth proportional to 27,590, 38,074.32 and 15,014.72 is: 20,720.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,590 : 38,074.32 = 15,014.72 : x
  2. Step 2: Convert to fraction form
    27,590/38,074.32 = 15,014.72/x
  3. Step 3: Cross multiply
    27,590x = 38,074.32 × 15,014.72
  4. Step 4: Simplify right side
    27,590x = 571,675,253.99
  5. Step 5: Solve for x
    x = 571,675,253.99/27,590
  6. Step 6: Final answer
    x = 20,720.38

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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.