Home / 21,794.07-30,070.91-12,842.40

Finding the Fourth Proportional to 21,794.07, 30,070.91 and 12,842.40

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Solution

The fourth proportional to 21,794.07, 30,070.91 and 12,842.40 is: 17,719.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,794.07 : 30,070.91 = 12,842.40 : x
  2. Step 2: Convert to fraction form
    21,794.07/30,070.91 = 12,842.40/x
  3. Step 3: Cross multiply
    21,794.07x = 30,070.91 × 12,842.40
  4. Step 4: Simplify right side
    21,794.07x = 386,182,703.14
  5. Step 5: Solve for x
    x = 386,182,703.14/21,794.07
  6. Step 6: Final answer
    x = 17,719.63

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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.