Home / 22,758.19-31,407.36-12,686.70

Finding the Fourth Proportional to 22,758.19, 31,407.36 and 12,686.70

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Solution

The fourth proportional to 22,758.19, 31,407.36 and 12,686.70 is: 17,508.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,758.19 : 31,407.36 = 12,686.70 : x
  2. Step 2: Convert to fraction form
    22,758.19/31,407.36 = 12,686.70/x
  3. Step 3: Cross multiply
    22,758.19x = 31,407.36 × 12,686.70
  4. Step 4: Simplify right side
    22,758.19x = 398,455,533.64
  5. Step 5: Solve for x
    x = 398,455,533.64/22,758.19
  6. Step 6: Final answer
    x = 17,508.23

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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.