Home / 30,154.93-41,612.81-18,216.18

Finding the Fourth Proportional to 30,154.93, 41,612.81 and 18,216.18

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Solution

The fourth proportional to 30,154.93, 41,612.81 and 18,216.18 is: 25,137.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.93 : 41,612.81 = 18,216.18 : x
  2. Step 2: Convert to fraction form
    30,154.93/41,612.81 = 18,216.18/x
  3. Step 3: Cross multiply
    30,154.93x = 41,612.81 × 18,216.18
  4. Step 4: Simplify right side
    30,154.93x = 758,026,482.81
  5. Step 5: Solve for x
    x = 758,026,482.81/30,154.93
  6. Step 6: Final answer
    x = 25,137.73

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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.