Home / 21,187.99-29,239.61-12,237.02

Finding the Fourth Proportional to 21,187.99, 29,239.61 and 12,237.02

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Solution

The fourth proportional to 21,187.99, 29,239.61 and 12,237.02 is: 16,887.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.99 : 29,239.61 = 12,237.02 : x
  2. Step 2: Convert to fraction form
    21,187.99/29,239.61 = 12,237.02/x
  3. Step 3: Cross multiply
    21,187.99x = 29,239.61 × 12,237.02
  4. Step 4: Simplify right side
    21,187.99x = 357,805,692.36
  5. Step 5: Solve for x
    x = 357,805,692.36/21,187.99
  6. Step 6: Final answer
    x = 16,887.19

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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.