Home / 30,139.29-41,592.18-18,200.40

Finding the Fourth Proportional to 30,139.29, 41,592.18 and 18,200.40

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Solution

The fourth proportional to 30,139.29, 41,592.18 and 18,200.40 is: 25,116.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.29 : 41,592.18 = 18,200.40 : x
  2. Step 2: Convert to fraction form
    30,139.29/41,592.18 = 18,200.40/x
  3. Step 3: Cross multiply
    30,139.29x = 41,592.18 × 18,200.40
  4. Step 4: Simplify right side
    30,139.29x = 756,994,225.15
  5. Step 5: Solve for x
    x = 756,994,225.15/30,139.29
  6. Step 6: Final answer
    x = 25,116.52

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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.