Home / 15,476.72-21,370.97-9,821.51

Finding the Fourth Proportional to 15,476.72, 21,370.97 and 9,821.51

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Solution

The fourth proportional to 15,476.72, 21,370.97 and 9,821.51 is: 13,561.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.72 : 21,370.97 = 9,821.51 : x
  2. Step 2: Convert to fraction form
    15,476.72/21,370.97 = 9,821.51/x
  3. Step 3: Cross multiply
    15,476.72x = 21,370.97 × 9,821.51
  4. Step 4: Simplify right side
    15,476.72x = 209,895,113.26
  5. Step 5: Solve for x
    x = 209,895,113.26/15,476.72
  6. Step 6: Final answer
    x = 13,561.99

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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.