Home / 28,177.87-42,268.10-15,688.49

Finding the Fourth Proportional to 28,177.87, 42,268.10 and 15,688.49

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Solution

The fourth proportional to 28,177.87, 42,268.10 and 15,688.49 is: 23,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.87 : 42,268.10 = 15,688.49 : x
  2. Step 2: Convert to fraction form
    28,177.87/42,268.10 = 15,688.49/x
  3. Step 3: Cross multiply
    28,177.87x = 42,268.10 × 15,688.49
  4. Step 4: Simplify right side
    28,177.87x = 663,122,558.50
  5. Step 5: Solve for x
    x = 663,122,558.50/28,177.87
  6. Step 6: Final answer
    x = 23,533.45

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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.