Home / 21,325.77-29,430.90-11,894.31

Finding the Fourth Proportional to 21,325.77, 29,430.90 and 11,894.31

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Solution

The fourth proportional to 21,325.77, 29,430.90 and 11,894.31 is: 16,414.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.77 : 29,430.90 = 11,894.31 : x
  2. Step 2: Convert to fraction form
    21,325.77/29,430.90 = 11,894.31/x
  3. Step 3: Cross multiply
    21,325.77x = 29,430.90 × 11,894.31
  4. Step 4: Simplify right side
    21,325.77x = 350,060,248.18
  5. Step 5: Solve for x
    x = 350,060,248.18/21,325.77
  6. Step 6: Final answer
    x = 16,414.89

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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.