Home / 19,656.68-27,135.41-12,587.13

Finding the Fourth Proportional to 19,656.68, 27,135.41 and 12,587.13

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Solution

The fourth proportional to 19,656.68, 27,135.41 and 12,587.13 is: 17,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,656.68 : 27,135.41 = 12,587.13 : x
  2. Step 2: Convert to fraction form
    19,656.68/27,135.41 = 12,587.13/x
  3. Step 3: Cross multiply
    19,656.68x = 27,135.41 × 12,587.13
  4. Step 4: Simplify right side
    19,656.68x = 341,556,870.34
  5. Step 5: Solve for x
    x = 341,556,870.34/19,656.68
  6. Step 6: Final answer
    x = 17,376.13

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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.