Home / 21,033.06-31,545.14-7,886.40

Finding the Fourth Proportional to 21,033.06, 31,545.14 and 7,886.40

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Solution

The fourth proportional to 21,033.06, 31,545.14 and 7,886.40 is: 11,827.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033.06 : 31,545.14 = 7,886.40 : x
  2. Step 2: Convert to fraction form
    21,033.06/31,545.14 = 7,886.40/x
  3. Step 3: Cross multiply
    21,033.06x = 31,545.14 × 7,886.40
  4. Step 4: Simplify right side
    21,033.06x = 248,777,552.66
  5. Step 5: Solve for x
    x = 248,777,552.66/21,033.06
  6. Step 6: Final answer
    x = 11,827.93

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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.