Home / 21,275.30-31,914.15-6,484.70

Finding the Fourth Proportional to 21,275.30, 31,914.15 and 6,484.70

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Solution

The fourth proportional to 21,275.30, 31,914.15 and 6,484.70 is: 9,727.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.30 : 31,914.15 = 6,484.70 : x
  2. Step 2: Convert to fraction form
    21,275.30/31,914.15 = 6,484.70/x
  3. Step 3: Cross multiply
    21,275.30x = 31,914.15 × 6,484.70
  4. Step 4: Simplify right side
    21,275.30x = 206,953,688.51
  5. Step 5: Solve for x
    x = 206,953,688.51/21,275.30
  6. Step 6: Final answer
    x = 9,727.42

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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.