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Finding the Fourth Proportional to 21,453.99, 29,605.29 and 12,502.95

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Solution

The fourth proportional to 21,453.99, 29,605.29 and 12,502.95 is: 17,253.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453.99 : 29,605.29 = 12,502.95 : x
  2. Step 2: Convert to fraction form
    21,453.99/29,605.29 = 12,502.95/x
  3. Step 3: Cross multiply
    21,453.99x = 29,605.29 × 12,502.95
  4. Step 4: Simplify right side
    21,453.99x = 370,153,460.61
  5. Step 5: Solve for x
    x = 370,153,460.61/21,453.99
  6. Step 6: Final answer
    x = 17,253.36

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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.