Home / 19,874.60-27,429.54-12,821.53

Finding the Fourth Proportional to 19,874.60, 27,429.54 and 12,821.53

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Solution

The fourth proportional to 19,874.60, 27,429.54 and 12,821.53 is: 17,695.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,874.60 : 27,429.54 = 12,821.53 : x
  2. Step 2: Convert to fraction form
    19,874.60/27,429.54 = 12,821.53/x
  3. Step 3: Cross multiply
    19,874.60x = 27,429.54 × 12,821.53
  4. Step 4: Simplify right side
    19,874.60x = 351,688,670.00
  5. Step 5: Solve for x
    x = 351,688,670.00/19,874.60
  6. Step 6: Final answer
    x = 17,695.38

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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.