Home / 25,478.78-38,219.56-10,688.32

Finding the Fourth Proportional to 25,478.78, 38,219.56 and 10,688.32

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Solution

The fourth proportional to 25,478.78, 38,219.56 and 10,688.32 is: 16,033.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,478.78 : 38,219.56 = 10,688.32 : x
  2. Step 2: Convert to fraction form
    25,478.78/38,219.56 = 10,688.32/x
  3. Step 3: Cross multiply
    25,478.78x = 38,219.56 × 10,688.32
  4. Step 4: Simplify right side
    25,478.78x = 408,502,887.54
  5. Step 5: Solve for x
    x = 408,502,887.54/25,478.78
  6. Step 6: Final answer
    x = 16,033.06

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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.