Home / 19,279.28-26,609.84-12,553.20

Finding the Fourth Proportional to 19,279.28, 26,609.84 and 12,553.20

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Solution

The fourth proportional to 19,279.28, 26,609.84 and 12,553.20 is: 17,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,279.28 : 26,609.84 = 12,553.20 : x
  2. Step 2: Convert to fraction form
    19,279.28/26,609.84 = 12,553.20/x
  3. Step 3: Cross multiply
    19,279.28x = 26,609.84 × 12,553.20
  4. Step 4: Simplify right side
    19,279.28x = 334,038,643.49
  5. Step 5: Solve for x
    x = 334,038,643.49/19,279.28
  6. Step 6: Final answer
    x = 17,326.30

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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.