Home / 21,276.40-31,931.60-9,590.52

Finding the Fourth Proportional to 21,276.40, 31,931.60 and 9,590.52

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Solution

The fourth proportional to 21,276.40, 31,931.60 and 9,590.52 is: 14,393.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.40 : 31,931.60 = 9,590.52 : x
  2. Step 2: Convert to fraction form
    21,276.40/31,931.60 = 9,590.52/x
  3. Step 3: Cross multiply
    21,276.40x = 31,931.60 × 9,590.52
  4. Step 4: Simplify right side
    21,276.40x = 306,240,648.43
  5. Step 5: Solve for x
    x = 306,240,648.43/21,276.40
  6. Step 6: Final answer
    x = 14,393.44

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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.