Home / 28,320.23-42,485.79-15,187.28

Finding the Fourth Proportional to 28,320.23, 42,485.79 and 15,187.28

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Solution

The fourth proportional to 28,320.23, 42,485.79 and 15,187.28 is: 22,783.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.23 : 42,485.79 = 15,187.28 : x
  2. Step 2: Convert to fraction form
    28,320.23/42,485.79 = 15,187.28/x
  3. Step 3: Cross multiply
    28,320.23x = 42,485.79 × 15,187.28
  4. Step 4: Simplify right side
    28,320.23x = 645,243,588.75
  5. Step 5: Solve for x
    x = 645,243,588.75/28,320.23
  6. Step 6: Final answer
    x = 22,783.84

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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.