Home / 12,818.64-19,255.29-12,069.59

Finding the Fourth Proportional to 12,818.64, 19,255.29 and 12,069.59

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Solution

The fourth proportional to 12,818.64, 19,255.29 and 12,069.59 is: 18,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.64 : 19,255.29 = 12,069.59 : x
  2. Step 2: Convert to fraction form
    12,818.64/19,255.29 = 12,069.59/x
  3. Step 3: Cross multiply
    12,818.64x = 19,255.29 × 12,069.59
  4. Step 4: Simplify right side
    12,818.64x = 232,403,455.63
  5. Step 5: Solve for x
    x = 232,403,455.63/12,818.64
  6. Step 6: Final answer
    x = 18,130.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.