Home / 31,431.60-43,356.64-19,334.16

Finding the Fourth Proportional to 31,431.60, 43,356.64 and 19,334.16

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Solution

The fourth proportional to 31,431.60, 43,356.64 and 19,334.16 is: 26,669.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.60 : 43,356.64 = 19,334.16 : x
  2. Step 2: Convert to fraction form
    31,431.60/43,356.64 = 19,334.16/x
  3. Step 3: Cross multiply
    31,431.60x = 43,356.64 × 19,334.16
  4. Step 4: Simplify right side
    31,431.60x = 838,264,214.82
  5. Step 5: Solve for x
    x = 838,264,214.82/31,431.60
  6. Step 6: Final answer
    x = 26,669.47

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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.