Home / 18,579.60-27,869.40-15,663.60

Finding the Fourth Proportional to 18,579.60, 27,869.40 and 15,663.60

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Solution

The fourth proportional to 18,579.60, 27,869.40 and 15,663.60 is: 23,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.60 : 27,869.40 = 15,663.60 : x
  2. Step 2: Convert to fraction form
    18,579.60/27,869.40 = 15,663.60/x
  3. Step 3: Cross multiply
    18,579.60x = 27,869.40 × 15,663.60
  4. Step 4: Simplify right side
    18,579.60x = 436,535,133.84
  5. Step 5: Solve for x
    x = 436,535,133.84/18,579.60
  6. Step 6: Final answer
    x = 23,495.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.