Home / 15,296.71-21,111.84-8,585.05

Finding the Fourth Proportional to 15,296.71, 21,111.84 and 8,585.05

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Solution

The fourth proportional to 15,296.71, 21,111.84 and 8,585.05 is: 11,848.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,296.71 : 21,111.84 = 8,585.05 : x
  2. Step 2: Convert to fraction form
    15,296.71/21,111.84 = 8,585.05/x
  3. Step 3: Cross multiply
    15,296.71x = 21,111.84 × 8,585.05
  4. Step 4: Simplify right side
    15,296.71x = 181,246,201.99
  5. Step 5: Solve for x
    x = 181,246,201.99/15,296.71
  6. Step 6: Final answer
    x = 11,848.70

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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.