Home / 30,401.61-45,612.89-12,641.81

Finding the Fourth Proportional to 30,401.61, 45,612.89 and 12,641.81

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Solution

The fourth proportional to 30,401.61, 45,612.89 and 12,641.81 is: 18,967.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,401.61 : 45,612.89 = 12,641.81 : x
  2. Step 2: Convert to fraction form
    30,401.61/45,612.89 = 12,641.81/x
  3. Step 3: Cross multiply
    30,401.61x = 45,612.89 × 12,641.81
  4. Step 4: Simplify right side
    30,401.61x = 576,629,292.47
  5. Step 5: Solve for x
    x = 576,629,292.47/30,401.61
  6. Step 6: Final answer
    x = 18,967.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.