Home / 21,426.66-29,497.32-18,430.47

Finding the Fourth Proportional to 21,426.66, 29,497.32 and 18,430.47

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Solution

The fourth proportional to 21,426.66, 29,497.32 and 18,430.47 is: 25,372.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.66 : 29,497.32 = 18,430.47 : x
  2. Step 2: Convert to fraction form
    21,426.66/29,497.32 = 18,430.47/x
  3. Step 3: Cross multiply
    21,426.66x = 29,497.32 × 18,430.47
  4. Step 4: Simplify right side
    21,426.66x = 543,649,471.34
  5. Step 5: Solve for x
    x = 543,649,471.34/21,426.66
  6. Step 6: Final answer
    x = 25,372.57

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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.