Home / 20,929.02-31,390.08-6,889.23

Finding the Fourth Proportional to 20,929.02, 31,390.08 and 6,889.23

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Solution

The fourth proportional to 20,929.02, 31,390.08 and 6,889.23 is: 10,332.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.02 : 31,390.08 = 6,889.23 : x
  2. Step 2: Convert to fraction form
    20,929.02/31,390.08 = 6,889.23/x
  3. Step 3: Cross multiply
    20,929.02x = 31,390.08 × 6,889.23
  4. Step 4: Simplify right side
    20,929.02x = 216,253,480.84
  5. Step 5: Solve for x
    x = 216,253,480.84/20,929.02
  6. Step 6: Final answer
    x = 10,332.71

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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.