Home / 18,690.31-25,792.54-10,306.81

Finding the Fourth Proportional to 18,690.31, 25,792.54 and 10,306.81

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Solution

The fourth proportional to 18,690.31, 25,792.54 and 10,306.81 is: 14,223.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.31 : 25,792.54 = 10,306.81 : x
  2. Step 2: Convert to fraction form
    18,690.31/25,792.54 = 10,306.81/x
  3. Step 3: Cross multiply
    18,690.31x = 25,792.54 × 10,306.81
  4. Step 4: Simplify right side
    18,690.31x = 265,838,873.65
  5. Step 5: Solve for x
    x = 265,838,873.65/18,690.31
  6. Step 6: Final answer
    x = 14,223.35

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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.