Home / 15,516.63-21,415.15-8,803.92

Finding the Fourth Proportional to 15,516.63, 21,415.15 and 8,803.92

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Solution

The fourth proportional to 15,516.63, 21,415.15 and 8,803.92 is: 12,150.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.63 : 21,415.15 = 8,803.92 : x
  2. Step 2: Convert to fraction form
    15,516.63/21,415.15 = 8,803.92/x
  3. Step 3: Cross multiply
    15,516.63x = 21,415.15 × 8,803.92
  4. Step 4: Simplify right side
    15,516.63x = 188,537,358.70
  5. Step 5: Solve for x
    x = 188,537,358.70/15,516.63
  6. Step 6: Final answer
    x = 12,150.66

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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.