Home / 15,589.07-21,511.93-8,515.50

Finding the Fourth Proportional to 15,589.07, 21,511.93 and 8,515.50

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Solution

The fourth proportional to 15,589.07, 21,511.93 and 8,515.50 is: 11,750.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.07 : 21,511.93 = 8,515.50 : x
  2. Step 2: Convert to fraction form
    15,589.07/21,511.93 = 8,515.50/x
  3. Step 3: Cross multiply
    15,589.07x = 21,511.93 × 8,515.50
  4. Step 4: Simplify right side
    15,589.07x = 183,184,753.92
  5. Step 5: Solve for x
    x = 183,184,753.92/15,589.07
  6. Step 6: Final answer
    x = 11,750.84

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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.