Home / 23,155.57-31,954.83-12,545.20

Finding the Fourth Proportional to 23,155.57, 31,954.83 and 12,545.20

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Solution

The fourth proportional to 23,155.57, 31,954.83 and 12,545.20 is: 17,312.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,155.57 : 31,954.83 = 12,545.20 : x
  2. Step 2: Convert to fraction form
    23,155.57/31,954.83 = 12,545.20/x
  3. Step 3: Cross multiply
    23,155.57x = 31,954.83 × 12,545.20
  4. Step 4: Simplify right side
    23,155.57x = 400,879,733.32
  5. Step 5: Solve for x
    x = 400,879,733.32/23,155.57
  6. Step 6: Final answer
    x = 17,312.45

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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.