Home / 30,160.56-45,233.55-12,643.50

Finding the Fourth Proportional to 30,160.56, 45,233.55 and 12,643.50

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Solution

The fourth proportional to 30,160.56, 45,233.55 and 12,643.50 is: 18,962.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,160.56 : 45,233.55 = 12,643.50 : x
  2. Step 2: Convert to fraction form
    30,160.56/45,233.55 = 12,643.50/x
  3. Step 3: Cross multiply
    30,160.56x = 45,233.55 × 12,643.50
  4. Step 4: Simplify right side
    30,160.56x = 571,910,389.43
  5. Step 5: Solve for x
    x = 571,910,389.43/30,160.56
  6. Step 6: Final answer
    x = 18,962.19

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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.