Home / 21,679.02-29,916.99-12,247.59

Finding the Fourth Proportional to 21,679.02, 29,916.99 and 12,247.59

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Solution

The fourth proportional to 21,679.02, 29,916.99 and 12,247.59 is: 16,901.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.02 : 29,916.99 = 12,247.59 : x
  2. Step 2: Convert to fraction form
    21,679.02/29,916.99 = 12,247.59/x
  3. Step 3: Cross multiply
    21,679.02x = 29,916.99 × 12,247.59
  4. Step 4: Simplify right side
    21,679.02x = 366,411,027.55
  5. Step 5: Solve for x
    x = 366,411,027.55/21,679.02
  6. Step 6: Final answer
    x = 16,901.64

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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.