Home / 15,813.08-21,823.18-8,739.36

Finding the Fourth Proportional to 15,813.08, 21,823.18 and 8,739.36

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Solution

The fourth proportional to 15,813.08, 21,823.18 and 8,739.36 is: 12,060.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.08 : 21,823.18 = 8,739.36 : x
  2. Step 2: Convert to fraction form
    15,813.08/21,823.18 = 8,739.36/x
  3. Step 3: Cross multiply
    15,813.08x = 21,823.18 × 8,739.36
  4. Step 4: Simplify right side
    15,813.08x = 190,720,626.36
  5. Step 5: Solve for x
    x = 190,720,626.36/15,813.08
  6. Step 6: Final answer
    x = 12,060.94

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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.