Home / 21,620.52-32,430.78-9,943.56

Finding the Fourth Proportional to 21,620.52, 32,430.78 and 9,943.56

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Solution

The fourth proportional to 21,620.52, 32,430.78 and 9,943.56 is: 14,915.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620.52 : 32,430.78 = 9,943.56 : x
  2. Step 2: Convert to fraction form
    21,620.52/32,430.78 = 9,943.56/x
  3. Step 3: Cross multiply
    21,620.52x = 32,430.78 × 9,943.56
  4. Step 4: Simplify right side
    21,620.52x = 322,477,406.78
  5. Step 5: Solve for x
    x = 322,477,406.78/21,620.52
  6. Step 6: Final answer
    x = 14,915.34

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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.