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Finding the Fourth Proportional to 21,064.31, 29,068.80 and 11,504.27

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Solution

The fourth proportional to 21,064.31, 29,068.80 and 11,504.27 is: 15,875.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064.31 : 29,068.80 = 11,504.27 : x
  2. Step 2: Convert to fraction form
    21,064.31/29,068.80 = 11,504.27/x
  3. Step 3: Cross multiply
    21,064.31x = 29,068.80 × 11,504.27
  4. Step 4: Simplify right side
    21,064.31x = 334,415,178.43
  5. Step 5: Solve for x
    x = 334,415,178.43/21,064.31
  6. Step 6: Final answer
    x = 15,875.92

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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.