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Finding the Fourth Proportional to 21,053.77, 29,059.08 and 13,884.98

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Solution

The fourth proportional to 21,053.77, 29,059.08 and 13,884.98 is: 19,164.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.77 : 29,059.08 = 13,884.98 : x
  2. Step 2: Convert to fraction form
    21,053.77/29,059.08 = 13,884.98/x
  3. Step 3: Cross multiply
    21,053.77x = 29,059.08 × 13,884.98
  4. Step 4: Simplify right side
    21,053.77x = 403,484,599.32
  5. Step 5: Solve for x
    x = 403,484,599.32/21,053.77
  6. Step 6: Final answer
    x = 19,164.49

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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.