Home / 21,368.86-29,488.29-11,808.19

Finding the Fourth Proportional to 21,368.86, 29,488.29 and 11,808.19

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Solution

The fourth proportional to 21,368.86, 29,488.29 and 11,808.19 is: 16,294.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.86 : 29,488.29 = 11,808.19 : x
  2. Step 2: Convert to fraction form
    21,368.86/29,488.29 = 11,808.19/x
  3. Step 3: Cross multiply
    21,368.86x = 29,488.29 × 11,808.19
  4. Step 4: Simplify right side
    21,368.86x = 348,203,331.10
  5. Step 5: Solve for x
    x = 348,203,331.10/21,368.86
  6. Step 6: Final answer
    x = 16,294.90

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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.