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Finding the Fourth Proportional to 21,461.67, 29,617.02 and 12,030.21

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Solution

The fourth proportional to 21,461.67, 29,617.02 and 12,030.21 is: 16,601.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.67 : 29,617.02 = 12,030.21 : x
  2. Step 2: Convert to fraction form
    21,461.67/29,617.02 = 12,030.21/x
  3. Step 3: Cross multiply
    21,461.67x = 29,617.02 × 12,030.21
  4. Step 4: Simplify right side
    21,461.67x = 356,298,970.17
  5. Step 5: Solve for x
    x = 356,298,970.17/21,461.67
  6. Step 6: Final answer
    x = 16,601.64

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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.