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Finding the Fourth Proportional to 38,510.50, 57,765.76 and 13,886.50

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Solution

The fourth proportional to 38,510.50, 57,765.76 and 13,886.50 is: 20,829.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,510.50 : 57,765.76 = 13,886.50 : x
  2. Step 2: Convert to fraction form
    38,510.50/57,765.76 = 13,886.50/x
  3. Step 3: Cross multiply
    38,510.50x = 57,765.76 × 13,886.50
  4. Step 4: Simplify right side
    38,510.50x = 802,164,226.24
  5. Step 5: Solve for x
    x = 802,164,226.24/38,510.50
  6. Step 6: Final answer
    x = 20,829.75

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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.