Home / 28,435.86-42,639.75-8,709.66

Finding the Fourth Proportional to 28,435.86, 42,639.75 and 8,709.66

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Solution

The fourth proportional to 28,435.86, 42,639.75 and 8,709.66 is: 13,060.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435.86 : 42,639.75 = 8,709.66 : x
  2. Step 2: Convert to fraction form
    28,435.86/42,639.75 = 8,709.66/x
  3. Step 3: Cross multiply
    28,435.86x = 42,639.75 × 8,709.66
  4. Step 4: Simplify right side
    28,435.86x = 371,377,724.99
  5. Step 5: Solve for x
    x = 371,377,724.99/28,435.86
  6. Step 6: Final answer
    x = 13,060.19

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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.