Home / 29,231.81-40,339.92-15,803.06

Finding the Fourth Proportional to 29,231.81, 40,339.92 and 15,803.06

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Solution

The fourth proportional to 29,231.81, 40,339.92 and 15,803.06 is: 21,808.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,231.81 : 40,339.92 = 15,803.06 : x
  2. Step 2: Convert to fraction form
    29,231.81/40,339.92 = 15,803.06/x
  3. Step 3: Cross multiply
    29,231.81x = 40,339.92 × 15,803.06
  4. Step 4: Simplify right side
    29,231.81x = 637,493,974.46
  5. Step 5: Solve for x
    x = 637,493,974.46/29,231.81
  6. Step 6: Final answer
    x = 21,808.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.