Home / 28,061.70-38,725.38-15,314.98

Finding the Fourth Proportional to 28,061.70, 38,725.38 and 15,314.98

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Solution

The fourth proportional to 28,061.70, 38,725.38 and 15,314.98 is: 21,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.70 : 38,725.38 = 15,314.98 : x
  2. Step 2: Convert to fraction form
    28,061.70/38,725.38 = 15,314.98/x
  3. Step 3: Cross multiply
    28,061.70x = 38,725.38 × 15,314.98
  4. Step 4: Simplify right side
    28,061.70x = 593,078,420.19
  5. Step 5: Solve for x
    x = 593,078,420.19/28,061.70
  6. Step 6: Final answer
    x = 21,134.80

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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.