Home / 31,054.88-42,856.64-16,908.63

Finding the Fourth Proportional to 31,054.88, 42,856.64 and 16,908.63

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Solution

The fourth proportional to 31,054.88, 42,856.64 and 16,908.63 is: 23,334.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,054.88 : 42,856.64 = 16,908.63 : x
  2. Step 2: Convert to fraction form
    31,054.88/42,856.64 = 16,908.63/x
  3. Step 3: Cross multiply
    31,054.88x = 42,856.64 × 16,908.63
  4. Step 4: Simplify right side
    31,054.88x = 724,646,984.26
  5. Step 5: Solve for x
    x = 724,646,984.26/31,054.88
  6. Step 6: Final answer
    x = 23,334.40

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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.