Home / 18,688.50-25,788.93-10,725.12

Finding the Fourth Proportional to 18,688.50, 25,788.93 and 10,725.12

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Solution

The fourth proportional to 18,688.50, 25,788.93 and 10,725.12 is: 14,799.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.50 : 25,788.93 = 10,725.12 : x
  2. Step 2: Convert to fraction form
    18,688.50/25,788.93 = 10,725.12/x
  3. Step 3: Cross multiply
    18,688.50x = 25,788.93 × 10,725.12
  4. Step 4: Simplify right side
    18,688.50x = 276,589,368.92
  5. Step 5: Solve for x
    x = 276,589,368.92/18,688.50
  6. Step 6: Final answer
    x = 14,799.98

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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.