Home / 19,216.98-28,828.53-8,123.76

Finding the Fourth Proportional to 19,216.98, 28,828.53 and 8,123.76

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Solution

The fourth proportional to 19,216.98, 28,828.53 and 8,123.76 is: 12,186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,216.98 : 28,828.53 = 8,123.76 : x
  2. Step 2: Convert to fraction form
    19,216.98/28,828.53 = 8,123.76/x
  3. Step 3: Cross multiply
    19,216.98x = 28,828.53 × 8,123.76
  4. Step 4: Simplify right side
    19,216.98x = 234,196,058.87
  5. Step 5: Solve for x
    x = 234,196,058.87/19,216.98
  6. Step 6: Final answer
    x = 12,186.93

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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.