Home / 28,180.32-42,243.20-15,688.96

Finding the Fourth Proportional to 28,180.32, 42,243.20 and 15,688.96

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Solution

The fourth proportional to 28,180.32, 42,243.20 and 15,688.96 is: 23,518.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.32 : 42,243.20 = 15,688.96 : x
  2. Step 2: Convert to fraction form
    28,180.32/42,243.20 = 15,688.96/x
  3. Step 3: Cross multiply
    28,180.32x = 42,243.20 × 15,688.96
  4. Step 4: Simplify right side
    28,180.32x = 662,751,875.07
  5. Step 5: Solve for x
    x = 662,751,875.07/28,180.32
  6. Step 6: Final answer
    x = 23,518.25

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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.