Home / 20,693.16-31,085.87-12,801.53

Finding the Fourth Proportional to 20,693.16, 31,085.87 and 12,801.53

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Solution

The fourth proportional to 20,693.16, 31,085.87 and 12,801.53 is: 19,230.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.16 : 31,085.87 = 12,801.53 : x
  2. Step 2: Convert to fraction form
    20,693.16/31,085.87 = 12,801.53/x
  3. Step 3: Cross multiply
    20,693.16x = 31,085.87 × 12,801.53
  4. Step 4: Simplify right side
    20,693.16x = 397,946,697.38
  5. Step 5: Solve for x
    x = 397,946,697.38/20,693.16
  6. Step 6: Final answer
    x = 19,230.83

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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.