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Finding the Fourth Proportional to 15,986.70, 23,980.05 and 10,154.70

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Solution

The fourth proportional to 15,986.70, 23,980.05 and 10,154.70 is: 15,232.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,986.70 : 23,980.05 = 10,154.70 : x
  2. Step 2: Convert to fraction form
    15,986.70/23,980.05 = 10,154.70/x
  3. Step 3: Cross multiply
    15,986.70x = 23,980.05 × 10,154.70
  4. Step 4: Simplify right side
    15,986.70x = 243,510,213.74
  5. Step 5: Solve for x
    x = 243,510,213.74/15,986.70
  6. Step 6: Final answer
    x = 15,232.05

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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.