Home / 39,235.47-54,145.30-21,330.51

Finding the Fourth Proportional to 39,235.47, 54,145.30 and 21,330.51

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Solution

The fourth proportional to 39,235.47, 54,145.30 and 21,330.51 is: 29,436.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.47 : 54,145.30 = 21,330.51 : x
  2. Step 2: Convert to fraction form
    39,235.47/54,145.30 = 21,330.51/x
  3. Step 3: Cross multiply
    39,235.47x = 54,145.30 × 21,330.51
  4. Step 4: Simplify right side
    39,235.47x = 1,154,946,863.10
  5. Step 5: Solve for x
    x = 1,154,946,863.10/39,235.47
  6. Step 6: Final answer
    x = 29,436.29

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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.