Home / 30,347.15-45,520.65-8,160.53

Finding the Fourth Proportional to 30,347.15, 45,520.65 and 8,160.53

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Solution

The fourth proportional to 30,347.15, 45,520.65 and 8,160.53 is: 12,240.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,347.15 : 45,520.65 = 8,160.53 : x
  2. Step 2: Convert to fraction form
    30,347.15/45,520.65 = 8,160.53/x
  3. Step 3: Cross multiply
    30,347.15x = 45,520.65 × 8,160.53
  4. Step 4: Simplify right side
    30,347.15x = 371,472,402.34
  5. Step 5: Solve for x
    x = 371,472,402.34/30,347.15
  6. Step 6: Final answer
    x = 12,240.77

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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.