Home / 21,368.80-29,488.87-11,808.42

Finding the Fourth Proportional to 21,368.80, 29,488.87 and 11,808.42

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Solution

The fourth proportional to 21,368.80, 29,488.87 and 11,808.42 is: 16,295.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.80 : 29,488.87 = 11,808.42 : x
  2. Step 2: Convert to fraction form
    21,368.80/29,488.87 = 11,808.42/x
  3. Step 3: Cross multiply
    21,368.80x = 29,488.87 × 11,808.42
  4. Step 4: Simplify right side
    21,368.80x = 348,216,903.24
  5. Step 5: Solve for x
    x = 348,216,903.24/21,368.80
  6. Step 6: Final answer
    x = 16,295.58

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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.