Home / 21,124.09-31,685.46-10,038.79

Finding the Fourth Proportional to 21,124.09, 31,685.46 and 10,038.79

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Solution

The fourth proportional to 21,124.09, 31,685.46 and 10,038.79 is: 15,057.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.09 : 31,685.46 = 10,038.79 : x
  2. Step 2: Convert to fraction form
    21,124.09/31,685.46 = 10,038.79/x
  3. Step 3: Cross multiply
    21,124.09x = 31,685.46 × 10,038.79
  4. Step 4: Simplify right side
    21,124.09x = 318,083,678.99
  5. Step 5: Solve for x
    x = 318,083,678.99/21,124.09
  6. Step 6: Final answer
    x = 15,057.86

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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.