Home / 31,939.34-47,929.51-21,421.24

Finding the Fourth Proportional to 31,939.34, 47,929.51 and 21,421.24

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Solution

The fourth proportional to 31,939.34, 47,929.51 and 21,421.24 is: 32,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,939.34 : 47,929.51 = 21,421.24 : x
  2. Step 2: Convert to fraction form
    31,939.34/47,929.51 = 21,421.24/x
  3. Step 3: Cross multiply
    31,939.34x = 47,929.51 × 21,421.24
  4. Step 4: Simplify right side
    31,939.34x = 1,026,709,190.04
  5. Step 5: Solve for x
    x = 1,026,709,190.04/31,939.34
  6. Step 6: Final answer
    x = 32,145.60

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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.