Home / 25,742.34-35,545.10-20,690.37

Finding the Fourth Proportional to 25,742.34, 35,545.10 and 20,690.37

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Solution

The fourth proportional to 25,742.34, 35,545.10 and 20,690.37 is: 28,569.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,742.34 : 35,545.10 = 20,690.37 : x
  2. Step 2: Convert to fraction form
    25,742.34/35,545.10 = 20,690.37/x
  3. Step 3: Cross multiply
    25,742.34x = 35,545.10 × 20,690.37
  4. Step 4: Simplify right side
    25,742.34x = 735,441,167.24
  5. Step 5: Solve for x
    x = 735,441,167.24/25,742.34
  6. Step 6: Final answer
    x = 28,569.32

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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.