Home / 15,303.35-21,120.74-8,589.38

Finding the Fourth Proportional to 15,303.35, 21,120.74 and 8,589.38

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Solution

The fourth proportional to 15,303.35, 21,120.74 and 8,589.38 is: 11,854.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,303.35 : 21,120.74 = 8,589.38 : x
  2. Step 2: Convert to fraction form
    15,303.35/21,120.74 = 8,589.38/x
  3. Step 3: Cross multiply
    15,303.35x = 21,120.74 × 8,589.38
  4. Step 4: Simplify right side
    15,303.35x = 181,413,913.19
  5. Step 5: Solve for x
    x = 181,413,913.19/15,303.35
  6. Step 6: Final answer
    x = 11,854.53

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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.