Home / 15,303.75-21,119.13-8,589.41

Finding the Fourth Proportional to 15,303.75, 21,119.13 and 8,589.41

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Solution

The fourth proportional to 15,303.75, 21,119.13 and 8,589.41 is: 11,853.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,303.75 : 21,119.13 = 8,589.41 : x
  2. Step 2: Convert to fraction form
    15,303.75/21,119.13 = 8,589.41/x
  3. Step 3: Cross multiply
    15,303.75x = 21,119.13 × 8,589.41
  4. Step 4: Simplify right side
    15,303.75x = 181,400,866.41
  5. Step 5: Solve for x
    x = 181,400,866.41/15,303.75
  6. Step 6: Final answer
    x = 11,853.36

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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.