Home / 21,368.36-29,487.60-11,807.69

Finding the Fourth Proportional to 21,368.36, 29,487.60 and 11,807.69

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Solution

The fourth proportional to 21,368.36, 29,487.60 and 11,807.69 is: 16,294.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.36 : 29,487.60 = 11,807.69 : x
  2. Step 2: Convert to fraction form
    21,368.36/29,487.60 = 11,807.69/x
  3. Step 3: Cross multiply
    21,368.36x = 29,487.60 × 11,807.69
  4. Step 4: Simplify right side
    21,368.36x = 348,180,439.64
  5. Step 5: Solve for x
    x = 348,180,439.64/21,368.36
  6. Step 6: Final answer
    x = 16,294.21

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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.