Home / 21,340.80-32,011.28-9,640.32

Finding the Fourth Proportional to 21,340.80, 32,011.28 and 9,640.32

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Solution

The fourth proportional to 21,340.80, 32,011.28 and 9,640.32 is: 14,460.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.80 : 32,011.28 = 9,640.32 : x
  2. Step 2: Convert to fraction form
    21,340.80/32,011.28 = 9,640.32/x
  3. Step 3: Cross multiply
    21,340.80x = 32,011.28 × 9,640.32
  4. Step 4: Simplify right side
    21,340.80x = 308,598,982.81
  5. Step 5: Solve for x
    x = 308,598,982.81/21,340.80
  6. Step 6: Final answer
    x = 14,460.52

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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.