Home / 28,618.01-42,931.62-13,828.02

Finding the Fourth Proportional to 28,618.01, 42,931.62 and 13,828.02

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Solution

The fourth proportional to 28,618.01, 42,931.62 and 13,828.02 is: 20,744.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,618.01 : 42,931.62 = 13,828.02 : x
  2. Step 2: Convert to fraction form
    28,618.01/42,931.62 = 13,828.02/x
  3. Step 3: Cross multiply
    28,618.01x = 42,931.62 × 13,828.02
  4. Step 4: Simplify right side
    28,618.01x = 593,659,139.00
  5. Step 5: Solve for x
    x = 593,659,139.00/28,618.01
  6. Step 6: Final answer
    x = 20,744.25

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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.