Home / 15,342.96-21,168.18-12,505.46

Finding the Fourth Proportional to 15,342.96, 21,168.18 and 12,505.46

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Solution

The fourth proportional to 15,342.96, 21,168.18 and 12,505.46 is: 17,253.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.96 : 21,168.18 = 12,505.46 : x
  2. Step 2: Convert to fraction form
    15,342.96/21,168.18 = 12,505.46/x
  3. Step 3: Cross multiply
    15,342.96x = 21,168.18 × 12,505.46
  4. Step 4: Simplify right side
    15,342.96x = 264,717,828.26
  5. Step 5: Solve for x
    x = 264,717,828.26/15,342.96
  6. Step 6: Final answer
    x = 17,253.37

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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.