Home / 15,671.78-23,491.16-5,139.06

Finding the Fourth Proportional to 15,671.78, 23,491.16 and 5,139.06

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Solution

The fourth proportional to 15,671.78, 23,491.16 and 5,139.06 is: 7,703.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,671.78 : 23,491.16 = 5,139.06 : x
  2. Step 2: Convert to fraction form
    15,671.78/23,491.16 = 5,139.06/x
  3. Step 3: Cross multiply
    15,671.78x = 23,491.16 × 5,139.06
  4. Step 4: Simplify right side
    15,671.78x = 120,722,455.01
  5. Step 5: Solve for x
    x = 120,722,455.01/15,671.78
  6. Step 6: Final answer
    x = 7,703.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.