Home / 15,305.44-21,118.71-8,590.15

Finding the Fourth Proportional to 15,305.44, 21,118.71 and 8,590.15

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Solution

The fourth proportional to 15,305.44, 21,118.71 and 8,590.15 is: 11,852.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,305.44 : 21,118.71 = 8,590.15 : x
  2. Step 2: Convert to fraction form
    15,305.44/21,118.71 = 8,590.15/x
  3. Step 3: Cross multiply
    15,305.44x = 21,118.71 × 8,590.15
  4. Step 4: Simplify right side
    15,305.44x = 181,412,886.71
  5. Step 5: Solve for x
    x = 181,412,886.71/15,305.44
  6. Step 6: Final answer
    x = 11,852.84

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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.