Home / 15,620.50-21,558.85-9,000.34

Finding the Fourth Proportional to 15,620.50, 21,558.85 and 9,000.34

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Solution

The fourth proportional to 15,620.50, 21,558.85 and 9,000.34 is: 12,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.50 : 21,558.85 = 9,000.34 : x
  2. Step 2: Convert to fraction form
    15,620.50/21,558.85 = 9,000.34/x
  3. Step 3: Cross multiply
    15,620.50x = 21,558.85 × 9,000.34
  4. Step 4: Simplify right side
    15,620.50x = 194,036,980.01
  5. Step 5: Solve for x
    x = 194,036,980.01/15,620.50
  6. Step 6: Final answer
    x = 12,421.94

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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.