Home / 21,928.60-32,876.70-9,438.40

Finding the Fourth Proportional to 21,928.60, 32,876.70 and 9,438.40

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Solution

The fourth proportional to 21,928.60, 32,876.70 and 9,438.40 is: 14,150.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.60 : 32,876.70 = 9,438.40 : x
  2. Step 2: Convert to fraction form
    21,928.60/32,876.70 = 9,438.40/x
  3. Step 3: Cross multiply
    21,928.60x = 32,876.70 × 9,438.40
  4. Step 4: Simplify right side
    21,928.60x = 310,303,445.28
  5. Step 5: Solve for x
    x = 310,303,445.28/21,928.60
  6. Step 6: Final answer
    x = 14,150.63

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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.