Home / 21,024.28-31,539.45-6,979.54

Finding the Fourth Proportional to 21,024.28, 31,539.45 and 6,979.54

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Solution

The fourth proportional to 21,024.28, 31,539.45 and 6,979.54 is: 10,470.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.28 : 31,539.45 = 6,979.54 : x
  2. Step 2: Convert to fraction form
    21,024.28/31,539.45 = 6,979.54/x
  3. Step 3: Cross multiply
    21,024.28x = 31,539.45 × 6,979.54
  4. Step 4: Simplify right side
    21,024.28x = 220,130,852.85
  5. Step 5: Solve for x
    x = 220,130,852.85/21,024.28
  6. Step 6: Final answer
    x = 10,470.32

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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.