Home / 15,239.74-21,032.34-9,578.75

Finding the Fourth Proportional to 15,239.74, 21,032.34 and 9,578.75

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Solution

The fourth proportional to 15,239.74, 21,032.34 and 9,578.75 is: 13,219.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,239.74 : 21,032.34 = 9,578.75 : x
  2. Step 2: Convert to fraction form
    15,239.74/21,032.34 = 9,578.75/x
  3. Step 3: Cross multiply
    15,239.74x = 21,032.34 × 9,578.75
  4. Step 4: Simplify right side
    15,239.74x = 201,463,526.78
  5. Step 5: Solve for x
    x = 201,463,526.78/15,239.74
  6. Step 6: Final answer
    x = 13,219.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.