Home / 22,715.37-31,346.29-12,643.53

Finding the Fourth Proportional to 22,715.37, 31,346.29 and 12,643.53

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Solution

The fourth proportional to 22,715.37, 31,346.29 and 12,643.53 is: 17,447.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,715.37 : 31,346.29 = 12,643.53 : x
  2. Step 2: Convert to fraction form
    22,715.37/31,346.29 = 12,643.53/x
  3. Step 3: Cross multiply
    22,715.37x = 31,346.29 × 12,643.53
  4. Step 4: Simplify right side
    22,715.37x = 396,327,656.26
  5. Step 5: Solve for x
    x = 396,327,656.26/22,715.37
  6. Step 6: Final answer
    x = 17,447.55

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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.