Home / 15,525.42-21,423.87-8,809.50

Finding the Fourth Proportional to 15,525.42, 21,423.87 and 8,809.50

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Solution

The fourth proportional to 15,525.42, 21,423.87 and 8,809.50 is: 12,156.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.42 : 21,423.87 = 8,809.50 : x
  2. Step 2: Convert to fraction form
    15,525.42/21,423.87 = 8,809.50/x
  3. Step 3: Cross multiply
    15,525.42x = 21,423.87 × 8,809.50
  4. Step 4: Simplify right side
    15,525.42x = 188,733,582.77
  5. Step 5: Solve for x
    x = 188,733,582.77/15,525.42
  6. Step 6: Final answer
    x = 12,156.42

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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.