Home / 15,690.54-21,659.49-11,216.10

Finding the Fourth Proportional to 15,690.54, 21,659.49 and 11,216.10

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Solution

The fourth proportional to 15,690.54, 21,659.49 and 11,216.10 is: 15,482.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.54 : 21,659.49 = 11,216.10 : x
  2. Step 2: Convert to fraction form
    15,690.54/21,659.49 = 11,216.10/x
  3. Step 3: Cross multiply
    15,690.54x = 21,659.49 × 11,216.10
  4. Step 4: Simplify right side
    15,690.54x = 242,935,005.79
  5. Step 5: Solve for x
    x = 242,935,005.79/15,690.54
  6. Step 6: Final answer
    x = 15,482.90

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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.