Home / 11,328.98-15,632.84-6,615.99

Finding the Fourth Proportional to 11,328.98, 15,632.84 and 6,615.99

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Solution

The fourth proportional to 11,328.98, 15,632.84 and 6,615.99 is: 9,129.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,328.98 : 15,632.84 = 6,615.99 : x
  2. Step 2: Convert to fraction form
    11,328.98/15,632.84 = 6,615.99/x
  3. Step 3: Cross multiply
    11,328.98x = 15,632.84 × 6,615.99
  4. Step 4: Simplify right side
    11,328.98x = 103,426,713.11
  5. Step 5: Solve for x
    x = 103,426,713.11/11,328.98
  6. Step 6: Final answer
    x = 9,129.39

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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.