Home / 28,510.56-42,774.52-20,206.64

Finding the Fourth Proportional to 28,510.56, 42,774.52 and 20,206.64

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Solution

The fourth proportional to 28,510.56, 42,774.52 and 20,206.64 is: 30,316.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.56 : 42,774.52 = 20,206.64 : x
  2. Step 2: Convert to fraction form
    28,510.56/42,774.52 = 20,206.64/x
  3. Step 3: Cross multiply
    28,510.56x = 42,774.52 × 20,206.64
  4. Step 4: Simplify right side
    28,510.56x = 864,329,326.81
  5. Step 5: Solve for x
    x = 864,329,326.81/28,510.56
  6. Step 6: Final answer
    x = 30,316.11

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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.