Home / 21,289.23-31,937.49-11,925.23

Finding the Fourth Proportional to 21,289.23, 31,937.49 and 11,925.23

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Solution

The fourth proportional to 21,289.23, 31,937.49 and 11,925.23 is: 17,889.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.23 : 31,937.49 = 11,925.23 : x
  2. Step 2: Convert to fraction form
    21,289.23/31,937.49 = 11,925.23/x
  3. Step 3: Cross multiply
    21,289.23x = 31,937.49 × 11,925.23
  4. Step 4: Simplify right side
    21,289.23x = 380,861,754.19
  5. Step 5: Solve for x
    x = 380,861,754.19/21,289.23
  6. Step 6: Final answer
    x = 17,889.88

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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.