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Finding the Fourth Proportional to 26,891.65, 37,111.67 and 15,561.67

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Solution

The fourth proportional to 26,891.65, 37,111.67 and 15,561.67 is: 21,475.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,891.65 : 37,111.67 = 15,561.67 : x
  2. Step 2: Convert to fraction form
    26,891.65/37,111.67 = 15,561.67/x
  3. Step 3: Cross multiply
    26,891.65x = 37,111.67 × 15,561.67
  4. Step 4: Simplify right side
    26,891.65x = 577,519,483.88
  5. Step 5: Solve for x
    x = 577,519,483.88/26,891.65
  6. Step 6: Final answer
    x = 21,475.80

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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.