Home / 21,366.60-29,485.40-11,807.29

Finding the Fourth Proportional to 21,366.60, 29,485.40 and 11,807.29

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Solution

The fourth proportional to 21,366.60, 29,485.40 and 11,807.29 is: 16,293.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,366.60 : 29,485.40 = 11,807.29 : x
  2. Step 2: Convert to fraction form
    21,366.60/29,485.40 = 11,807.29/x
  3. Step 3: Cross multiply
    21,366.60x = 29,485.40 × 11,807.29
  4. Step 4: Simplify right side
    21,366.60x = 348,142,668.57
  5. Step 5: Solve for x
    x = 348,142,668.57/21,366.60
  6. Step 6: Final answer
    x = 16,293.78

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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.