Home / 21,317.27-31,970.45-6,320.88

Finding the Fourth Proportional to 21,317.27, 31,970.45 and 6,320.88

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Solution

The fourth proportional to 21,317.27, 31,970.45 and 6,320.88 is: 9,479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.27 : 31,970.45 = 6,320.88 : x
  2. Step 2: Convert to fraction form
    21,317.27/31,970.45 = 6,320.88/x
  3. Step 3: Cross multiply
    21,317.27x = 31,970.45 × 6,320.88
  4. Step 4: Simplify right side
    21,317.27x = 202,081,354.29
  5. Step 5: Solve for x
    x = 202,081,354.29/21,317.27
  6. Step 6: Final answer
    x = 9,479.70

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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.