Home / 15,213.62-21,009.16-14,385.29

Finding the Fourth Proportional to 15,213.62, 21,009.16 and 14,385.29

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Solution

The fourth proportional to 15,213.62, 21,009.16 and 14,385.29 is: 19,865.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,213.62 : 21,009.16 = 14,385.29 : x
  2. Step 2: Convert to fraction form
    15,213.62/21,009.16 = 14,385.29/x
  3. Step 3: Cross multiply
    15,213.62x = 21,009.16 × 14,385.29
  4. Step 4: Simplify right side
    15,213.62x = 302,222,859.26
  5. Step 5: Solve for x
    x = 302,222,859.26/15,213.62
  6. Step 6: Final answer
    x = 19,865.28

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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.