Home / 21,478.53-32,210.07-7,434.75

Finding the Fourth Proportional to 21,478.53, 32,210.07 and 7,434.75

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Solution

The fourth proportional to 21,478.53, 32,210.07 and 7,434.75 is: 11,149.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.53 : 32,210.07 = 7,434.75 : x
  2. Step 2: Convert to fraction form
    21,478.53/32,210.07 = 7,434.75/x
  3. Step 3: Cross multiply
    21,478.53x = 32,210.07 × 7,434.75
  4. Step 4: Simplify right side
    21,478.53x = 239,473,817.93
  5. Step 5: Solve for x
    x = 239,473,817.93/21,478.53
  6. Step 6: Final answer
    x = 11,149.45

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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.