Home / 18,656.77-27,985.12-12,795.61

Finding the Fourth Proportional to 18,656.77, 27,985.12 and 12,795.61

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Solution

The fourth proportional to 18,656.77, 27,985.12 and 12,795.61 is: 19,193.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.77 : 27,985.12 = 12,795.61 : x
  2. Step 2: Convert to fraction form
    18,656.77/27,985.12 = 12,795.61/x
  3. Step 3: Cross multiply
    18,656.77x = 27,985.12 × 12,795.61
  4. Step 4: Simplify right side
    18,656.77x = 358,086,681.32
  5. Step 5: Solve for x
    x = 358,086,681.32/18,656.77
  6. Step 6: Final answer
    x = 19,193.39

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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.