Home / 26,688-36,826.24-15,930.88

Finding the Fourth Proportional to 26,688, 36,826.24 and 15,930.88

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Solution

The fourth proportional to 26,688, 36,826.24 and 15,930.88 is: 21,982.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,688 : 36,826.24 = 15,930.88 : x
  2. Step 2: Convert to fraction form
    26,688/36,826.24 = 15,930.88/x
  3. Step 3: Cross multiply
    26,688x = 36,826.24 × 15,930.88
  4. Step 4: Simplify right side
    26,688x = 586,674,410.29
  5. Step 5: Solve for x
    x = 586,674,410.29/26,688
  6. Step 6: Final answer
    x = 21,982.70

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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.