Home / 28,439.04-42,670.64-10,906.56

Finding the Fourth Proportional to 28,439.04, 42,670.64 and 10,906.56

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Solution

The fourth proportional to 28,439.04, 42,670.64 and 10,906.56 is: 16,364.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.04 : 42,670.64 = 10,906.56 : x
  2. Step 2: Convert to fraction form
    28,439.04/42,670.64 = 10,906.56/x
  3. Step 3: Cross multiply
    28,439.04x = 42,670.64 × 10,906.56
  4. Step 4: Simplify right side
    28,439.04x = 465,389,895.40
  5. Step 5: Solve for x
    x = 465,389,895.40/28,439.04
  6. Step 6: Final answer
    x = 16,364.47

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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.