Home / 25,854.29-35,682.21-15,780.57

Finding the Fourth Proportional to 25,854.29, 35,682.21 and 15,780.57

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Solution

The fourth proportional to 25,854.29, 35,682.21 and 15,780.57 is: 21,779.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,854.29 : 35,682.21 = 15,780.57 : x
  2. Step 2: Convert to fraction form
    25,854.29/35,682.21 = 15,780.57/x
  3. Step 3: Cross multiply
    25,854.29x = 35,682.21 × 15,780.57
  4. Step 4: Simplify right side
    25,854.29x = 563,085,652.11
  5. Step 5: Solve for x
    x = 563,085,652.11/25,854.29
  6. Step 6: Final answer
    x = 21,779.20

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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.