Home / 22,763.05-31,409.88-12,690.29

Finding the Fourth Proportional to 22,763.05, 31,409.88 and 12,690.29

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Solution

The fourth proportional to 22,763.05, 31,409.88 and 12,690.29 is: 17,510.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,763.05 : 31,409.88 = 12,690.29 : x
  2. Step 2: Convert to fraction form
    22,763.05/31,409.88 = 12,690.29/x
  3. Step 3: Cross multiply
    22,763.05x = 31,409.88 × 12,690.29
  4. Step 4: Simplify right side
    22,763.05x = 398,600,486.07
  5. Step 5: Solve for x
    x = 398,600,486.07/22,763.05
  6. Step 6: Final answer
    x = 17,510.86

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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.