Home / 21,151.65-31,705.15-7,098.35

Finding the Fourth Proportional to 21,151.65, 31,705.15 and 7,098.35

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Solution

The fourth proportional to 21,151.65, 31,705.15 and 7,098.35 is: 10,640.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.65 : 31,705.15 = 7,098.35 : x
  2. Step 2: Convert to fraction form
    21,151.65/31,705.15 = 7,098.35/x
  3. Step 3: Cross multiply
    21,151.65x = 31,705.15 × 7,098.35
  4. Step 4: Simplify right side
    21,151.65x = 225,054,216.01
  5. Step 5: Solve for x
    x = 225,054,216.01/21,151.65
  6. Step 6: Final answer
    x = 10,640.03

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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.