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Finding the Fourth Proportional to 21,461.01, 29,599.95 and 18,803.82

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Solution

The fourth proportional to 21,461.01, 29,599.95 and 18,803.82 is: 25,935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.01 : 29,599.95 = 18,803.82 : x
  2. Step 2: Convert to fraction form
    21,461.01/29,599.95 = 18,803.82/x
  3. Step 3: Cross multiply
    21,461.01x = 29,599.95 × 18,803.82
  4. Step 4: Simplify right side
    21,461.01x = 556,592,131.81
  5. Step 5: Solve for x
    x = 556,592,131.81/21,461.01
  6. Step 6: Final answer
    x = 25,935.04

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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.