Home / 15,756.58-21,737.24-9,379.59

Finding the Fourth Proportional to 15,756.58, 21,737.24 and 9,379.59

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Solution

The fourth proportional to 15,756.58, 21,737.24 and 9,379.59 is: 12,939.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.58 : 21,737.24 = 9,379.59 : x
  2. Step 2: Convert to fraction form
    15,756.58/21,737.24 = 9,379.59/x
  3. Step 3: Cross multiply
    15,756.58x = 21,737.24 × 9,379.59
  4. Step 4: Simplify right side
    15,756.58x = 203,886,398.93
  5. Step 5: Solve for x
    x = 203,886,398.93/15,756.58
  6. Step 6: Final answer
    x = 12,939.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.