Home / 31,054.90-42,856.86-16,908.76

Finding the Fourth Proportional to 31,054.90, 42,856.86 and 16,908.76

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Solution

The fourth proportional to 31,054.90, 42,856.86 and 16,908.76 is: 23,334.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,054.90 : 42,856.86 = 16,908.76 : x
  2. Step 2: Convert to fraction form
    31,054.90/42,856.86 = 16,908.76/x
  3. Step 3: Cross multiply
    31,054.90x = 42,856.86 × 16,908.76
  4. Step 4: Simplify right side
    31,054.90x = 724,656,360.09
  5. Step 5: Solve for x
    x = 724,656,360.09/31,054.90
  6. Step 6: Final answer
    x = 23,334.69

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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.