Home / 30,345.17-45,512.86-12,812.72

Finding the Fourth Proportional to 30,345.17, 45,512.86 and 12,812.72

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Solution

The fourth proportional to 30,345.17, 45,512.86 and 12,812.72 is: 19,217.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.17 : 45,512.86 = 12,812.72 : x
  2. Step 2: Convert to fraction form
    30,345.17/45,512.86 = 12,812.72/x
  3. Step 3: Cross multiply
    30,345.17x = 45,512.86 × 12,812.72
  4. Step 4: Simplify right side
    30,345.17x = 583,143,531.58
  5. Step 5: Solve for x
    x = 583,143,531.58/30,345.17
  6. Step 6: Final answer
    x = 19,217.01

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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.