Home / 15,282.06-21,081.48-9,979.98

Finding the Fourth Proportional to 15,282.06, 21,081.48 and 9,979.98

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Solution

The fourth proportional to 15,282.06, 21,081.48 and 9,979.98 is: 13,767.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,282.06 : 21,081.48 = 9,979.98 : x
  2. Step 2: Convert to fraction form
    15,282.06/21,081.48 = 9,979.98/x
  3. Step 3: Cross multiply
    15,282.06x = 21,081.48 × 9,979.98
  4. Step 4: Simplify right side
    15,282.06x = 210,392,748.77
  5. Step 5: Solve for x
    x = 210,392,748.77/15,282.06
  6. Step 6: Final answer
    x = 13,767.30

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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.