Home / 15,532.87-21,434.66-8,818.37

Finding the Fourth Proportional to 15,532.87, 21,434.66 and 8,818.37

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Solution

The fourth proportional to 15,532.87, 21,434.66 and 8,818.37 is: 12,168.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,532.87 : 21,434.66 = 8,818.37 : x
  2. Step 2: Convert to fraction form
    15,532.87/21,434.66 = 8,818.37/x
  3. Step 3: Cross multiply
    15,532.87x = 21,434.66 × 8,818.37
  4. Step 4: Simplify right side
    15,532.87x = 189,018,762.70
  5. Step 5: Solve for x
    x = 189,018,762.70/15,532.87
  6. Step 6: Final answer
    x = 12,168.96

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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.