Home / 38,942.07-53,740-21,037.07

Finding the Fourth Proportional to 38,942.07, 53,740 and 21,037.07

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Solution

The fourth proportional to 38,942.07, 53,740 and 21,037.07 is: 29,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,942.07 : 53,740 = 21,037.07 : x
  2. Step 2: Convert to fraction form
    38,942.07/53,740 = 21,037.07/x
  3. Step 3: Cross multiply
    38,942.07x = 53,740 × 21,037.07
  4. Step 4: Simplify right side
    38,942.07x = 1,130,532,141.80
  5. Step 5: Solve for x
    x = 1,130,532,141.80/38,942.07
  6. Step 6: Final answer
    x = 29,031.13

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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.