Home / 22,739.40-31,379.12-12,528.42

Finding the Fourth Proportional to 22,739.40, 31,379.12 and 12,528.42

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Solution

The fourth proportional to 22,739.40, 31,379.12 and 12,528.42 is: 17,288.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,739.40 : 31,379.12 = 12,528.42 : x
  2. Step 2: Convert to fraction form
    22,739.40/31,379.12 = 12,528.42/x
  3. Step 3: Cross multiply
    22,739.40x = 31,379.12 × 12,528.42
  4. Step 4: Simplify right side
    22,739.40x = 393,130,794.59
  5. Step 5: Solve for x
    x = 393,130,794.59/22,739.40
  6. Step 6: Final answer
    x = 17,288.53

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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.