Home / 20,306.90-30,465.55-7,823.57

Finding the Fourth Proportional to 20,306.90, 30,465.55 and 7,823.57

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Solution

The fourth proportional to 20,306.90, 30,465.55 and 7,823.57 is: 11,737.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.90 : 30,465.55 = 7,823.57 : x
  2. Step 2: Convert to fraction form
    20,306.90/30,465.55 = 7,823.57/x
  3. Step 3: Cross multiply
    20,306.90x = 30,465.55 × 7,823.57
  4. Step 4: Simplify right side
    20,306.90x = 238,349,391.83
  5. Step 5: Solve for x
    x = 238,349,391.83/20,306.90
  6. Step 6: Final answer
    x = 11,737.36

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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.