Home / 21,349.61-29,461.95-12,396.86

Finding the Fourth Proportional to 21,349.61, 29,461.95 and 12,396.86

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Solution

The fourth proportional to 21,349.61, 29,461.95 and 12,396.86 is: 17,107.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,349.61 : 29,461.95 = 12,396.86 : x
  2. Step 2: Convert to fraction form
    21,349.61/29,461.95 = 12,396.86/x
  3. Step 3: Cross multiply
    21,349.61x = 29,461.95 × 12,396.86
  4. Step 4: Simplify right side
    21,349.61x = 365,235,522.17
  5. Step 5: Solve for x
    x = 365,235,522.17/21,349.61
  6. Step 6: Final answer
    x = 17,107.37

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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.