Home / 30,856.40-42,581.62-16,708.92

Finding the Fourth Proportional to 30,856.40, 42,581.62 and 16,708.92

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Solution

The fourth proportional to 30,856.40, 42,581.62 and 16,708.92 is: 23,058.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,856.40 : 42,581.62 = 16,708.92 : x
  2. Step 2: Convert to fraction form
    30,856.40/42,581.62 = 16,708.92/x
  3. Step 3: Cross multiply
    30,856.40x = 42,581.62 × 16,708.92
  4. Step 4: Simplify right side
    30,856.40x = 711,492,882.05
  5. Step 5: Solve for x
    x = 711,492,882.05/30,856.40
  6. Step 6: Final answer
    x = 23,058.19

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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.