Home / 15,503.50-21,394.83-8,429.91

Finding the Fourth Proportional to 15,503.50, 21,394.83 and 8,429.91

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Solution

The fourth proportional to 15,503.50, 21,394.83 and 8,429.91 is: 11,633.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,503.50 : 21,394.83 = 8,429.91 : x
  2. Step 2: Convert to fraction form
    15,503.50/21,394.83 = 8,429.91/x
  3. Step 3: Cross multiply
    15,503.50x = 21,394.83 × 8,429.91
  4. Step 4: Simplify right side
    15,503.50x = 180,356,442.75
  5. Step 5: Solve for x
    x = 180,356,442.75/15,503.50
  6. Step 6: Final answer
    x = 11,633.27

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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.