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Finding the Fourth Proportional to 19,085.70, 28,628.55 and 10,337.70

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Solution

The fourth proportional to 19,085.70, 28,628.55 and 10,337.70 is: 15,506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,085.70 : 28,628.55 = 10,337.70 : x
  2. Step 2: Convert to fraction form
    19,085.70/28,628.55 = 10,337.70/x
  3. Step 3: Cross multiply
    19,085.70x = 28,628.55 × 10,337.70
  4. Step 4: Simplify right side
    19,085.70x = 295,953,361.34
  5. Step 5: Solve for x
    x = 295,953,361.34/19,085.70
  6. Step 6: Final answer
    x = 15,506.55

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Similar ratio
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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.