Home / 28,533.28-42,756.72-21,125.92

Finding the Fourth Proportional to 28,533.28, 42,756.72 and 21,125.92

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Solution

The fourth proportional to 28,533.28, 42,756.72 and 21,125.92 is: 31,656.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,533.28 : 42,756.72 = 21,125.92 : x
  2. Step 2: Convert to fraction form
    28,533.28/42,756.72 = 21,125.92/x
  3. Step 3: Cross multiply
    28,533.28x = 42,756.72 × 21,125.92
  4. Step 4: Simplify right side
    28,533.28x = 903,275,046.18
  5. Step 5: Solve for x
    x = 903,275,046.18/28,533.28
  6. Step 6: Final answer
    x = 31,656.89

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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.