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Finding the Fourth Proportional to 21,053.58, 29,053.53 and 11,621.94

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Solution

The fourth proportional to 21,053.58, 29,053.53 and 11,621.94 is: 16,038.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.58 : 29,053.53 = 11,621.94 : x
  2. Step 2: Convert to fraction form
    21,053.58/29,053.53 = 11,621.94/x
  3. Step 3: Cross multiply
    21,053.58x = 29,053.53 × 11,621.94
  4. Step 4: Simplify right side
    21,053.58x = 337,658,382.45
  5. Step 5: Solve for x
    x = 337,658,382.45/21,053.58
  6. Step 6: Final answer
    x = 16,038.05

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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.