Home / 13,859.30-19,126.63-8,554.21

Finding the Fourth Proportional to 13,859.30, 19,126.63 and 8,554.21

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Solution

The fourth proportional to 13,859.30, 19,126.63 and 8,554.21 is: 11,805.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.30 : 19,126.63 = 8,554.21 : x
  2. Step 2: Convert to fraction form
    13,859.30/19,126.63 = 8,554.21/x
  3. Step 3: Cross multiply
    13,859.30x = 19,126.63 × 8,554.21
  4. Step 4: Simplify right side
    13,859.30x = 163,613,172.49
  5. Step 5: Solve for x
    x = 163,613,172.49/13,859.30
  6. Step 6: Final answer
    x = 11,805.30

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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.