Home / 10,155.50-14,010.85-6,123.21

Finding the Fourth Proportional to 10,155.50, 14,010.85 and 6,123.21

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Solution

The fourth proportional to 10,155.50, 14,010.85 and 6,123.21 is: 8,447.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.50 : 14,010.85 = 6,123.21 : x
  2. Step 2: Convert to fraction form
    10,155.50/14,010.85 = 6,123.21/x
  3. Step 3: Cross multiply
    10,155.50x = 14,010.85 × 6,123.21
  4. Step 4: Simplify right side
    10,155.50x = 85,791,376.83
  5. Step 5: Solve for x
    x = 85,791,376.83/10,155.50
  6. Step 6: Final answer
    x = 8,447.77

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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.