Home / 13,862.07-20,763.68-12,870.63

Finding the Fourth Proportional to 13,862.07, 20,763.68 and 12,870.63

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Solution

The fourth proportional to 13,862.07, 20,763.68 and 12,870.63 is: 19,278.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.07 : 20,763.68 = 12,870.63 : x
  2. Step 2: Convert to fraction form
    13,862.07/20,763.68 = 12,870.63/x
  3. Step 3: Cross multiply
    13,862.07x = 20,763.68 × 12,870.63
  4. Step 4: Simplify right side
    13,862.07x = 267,241,578.37
  5. Step 5: Solve for x
    x = 267,241,578.37/13,862.07
  6. Step 6: Final answer
    x = 19,278.62

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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.