Home / 19,870.90-27,409.68-11,799.09

Finding the Fourth Proportional to 19,870.90, 27,409.68 and 11,799.09

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Solution

The fourth proportional to 19,870.90, 27,409.68 and 11,799.09 is: 16,275.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.90 : 27,409.68 = 11,799.09 : x
  2. Step 2: Convert to fraction form
    19,870.90/27,409.68 = 11,799.09/x
  3. Step 3: Cross multiply
    19,870.90x = 27,409.68 × 11,799.09
  4. Step 4: Simplify right side
    19,870.90x = 323,409,281.19
  5. Step 5: Solve for x
    x = 323,409,281.19/19,870.90
  6. Step 6: Final answer
    x = 16,275.52

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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.