Home / 30,856.20-42,581.64-16,709.05

Finding the Fourth Proportional to 30,856.20, 42,581.64 and 16,709.05

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Solution

The fourth proportional to 30,856.20, 42,581.64 and 16,709.05 is: 23,058.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,856.20 : 42,581.64 = 16,709.05 : x
  2. Step 2: Convert to fraction form
    30,856.20/42,581.64 = 16,709.05/x
  3. Step 3: Cross multiply
    30,856.20x = 42,581.64 × 16,709.05
  4. Step 4: Simplify right side
    30,856.20x = 711,498,751.84
  5. Step 5: Solve for x
    x = 711,498,751.84/30,856.20
  6. Step 6: Final answer
    x = 23,058.53

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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.