Home / 30,935.56-42,690.98-16,788.28

Finding the Fourth Proportional to 30,935.56, 42,690.98 and 16,788.28

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Solution

The fourth proportional to 30,935.56, 42,690.98 and 16,788.28 is: 23,167.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.56 : 42,690.98 = 16,788.28 : x
  2. Step 2: Convert to fraction form
    30,935.56/42,690.98 = 16,788.28/x
  3. Step 3: Cross multiply
    30,935.56x = 42,690.98 × 16,788.28
  4. Step 4: Simplify right side
    30,935.56x = 716,708,125.71
  5. Step 5: Solve for x
    x = 716,708,125.71/30,935.56
  6. Step 6: Final answer
    x = 23,167.78

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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.