Home / 15,352.13-21,185.93-8,728.13

Finding the Fourth Proportional to 15,352.13, 21,185.93 and 8,728.13

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Solution

The fourth proportional to 15,352.13, 21,185.93 and 8,728.13 is: 12,044.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,352.13 : 21,185.93 = 8,728.13 : x
  2. Step 2: Convert to fraction form
    15,352.13/21,185.93 = 8,728.13/x
  3. Step 3: Cross multiply
    15,352.13x = 21,185.93 × 8,728.13
  4. Step 4: Simplify right side
    15,352.13x = 184,913,467.10
  5. Step 5: Solve for x
    x = 184,913,467.10/15,352.13
  6. Step 6: Final answer
    x = 12,044.81

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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.