Home / 19,790.71-27,303.37-11,405.59

Finding the Fourth Proportional to 19,790.71, 27,303.37 and 11,405.59

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Solution

The fourth proportional to 19,790.71, 27,303.37 and 11,405.59 is: 15,735.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.71 : 27,303.37 = 11,405.59 : x
  2. Step 2: Convert to fraction form
    19,790.71/27,303.37 = 11,405.59/x
  3. Step 3: Cross multiply
    19,790.71x = 27,303.37 × 11,405.59
  4. Step 4: Simplify right side
    19,790.71x = 311,411,043.84
  5. Step 5: Solve for x
    x = 311,411,043.84/19,790.71
  6. Step 6: Final answer
    x = 15,735.21

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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.