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Finding the Fourth Proportional to 15,697.70, 21,646.52 and 10,923.05

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Solution

The fourth proportional to 15,697.70, 21,646.52 and 10,923.05 is: 15,062.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,697.70 : 21,646.52 = 10,923.05 : x
  2. Step 2: Convert to fraction form
    15,697.70/21,646.52 = 10,923.05/x
  3. Step 3: Cross multiply
    15,697.70x = 21,646.52 × 10,923.05
  4. Step 4: Simplify right side
    15,697.70x = 236,445,912.05
  5. Step 5: Solve for x
    x = 236,445,912.05/15,697.70
  6. Step 6: Final answer
    x = 15,062.46

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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.