Home / 19,875.17-27,417.29-12,319.09

Finding the Fourth Proportional to 19,875.17, 27,417.29 and 12,319.09

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Solution

The fourth proportional to 19,875.17, 27,417.29 and 12,319.09 is: 16,993.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,875.17 : 27,417.29 = 12,319.09 : x
  2. Step 2: Convert to fraction form
    19,875.17/27,417.29 = 12,319.09/x
  3. Step 3: Cross multiply
    19,875.17x = 27,417.29 × 12,319.09
  4. Step 4: Simplify right side
    19,875.17x = 337,755,932.93
  5. Step 5: Solve for x
    x = 337,755,932.93/19,875.17
  6. Step 6: Final answer
    x = 16,993.86

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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.