Home / 28,679.32-42,970.40-17,562.77

Finding the Fourth Proportional to 28,679.32, 42,970.40 and 17,562.77

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Solution

The fourth proportional to 28,679.32, 42,970.40 and 17,562.77 is: 26,314.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.32 : 42,970.40 = 17,562.77 : x
  2. Step 2: Convert to fraction form
    28,679.32/42,970.40 = 17,562.77/x
  3. Step 3: Cross multiply
    28,679.32x = 42,970.40 × 17,562.77
  4. Step 4: Simplify right side
    28,679.32x = 754,679,418.05
  5. Step 5: Solve for x
    x = 754,679,418.05/28,679.32
  6. Step 6: Final answer
    x = 26,314.42

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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.