Home / 28,603.28-42,815.16-19,666.46

Finding the Fourth Proportional to 28,603.28, 42,815.16 and 19,666.46

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Solution

The fourth proportional to 28,603.28, 42,815.16 and 19,666.46 is: 29,437.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.28 : 42,815.16 = 19,666.46 : x
  2. Step 2: Convert to fraction form
    28,603.28/42,815.16 = 19,666.46/x
  3. Step 3: Cross multiply
    28,603.28x = 42,815.16 × 19,666.46
  4. Step 4: Simplify right side
    28,603.28x = 842,022,631.53
  5. Step 5: Solve for x
    x = 842,022,631.53/28,603.28
  6. Step 6: Final answer
    x = 29,437.97

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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.