Home / 19,875.54-27,419.40-13,905.03

Finding the Fourth Proportional to 19,875.54, 27,419.40 and 13,905.03

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Solution

The fourth proportional to 19,875.54, 27,419.40 and 13,905.03 is: 19,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,875.54 : 27,419.40 = 13,905.03 : x
  2. Step 2: Convert to fraction form
    19,875.54/27,419.40 = 13,905.03/x
  3. Step 3: Cross multiply
    19,875.54x = 27,419.40 × 13,905.03
  4. Step 4: Simplify right side
    19,875.54x = 381,267,579.58
  5. Step 5: Solve for x
    x = 381,267,579.58/19,875.54
  6. Step 6: Final answer
    x = 19,182.75

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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.