Home / 15,503.49-21,395.09-8,429.96

Finding the Fourth Proportional to 15,503.49, 21,395.09 and 8,429.96

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Solution

The fourth proportional to 15,503.49, 21,395.09 and 8,429.96 is: 11,633.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,503.49 : 21,395.09 = 8,429.96 : x
  2. Step 2: Convert to fraction form
    15,503.49/21,395.09 = 8,429.96/x
  3. Step 3: Cross multiply
    15,503.49x = 21,395.09 × 8,429.96
  4. Step 4: Simplify right side
    15,503.49x = 180,359,603.77
  5. Step 5: Solve for x
    x = 180,359,603.77/15,503.49
  6. Step 6: Final answer
    x = 11,633.48

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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.