Home / 30,320.10-45,480.15-9,543.60

Finding the Fourth Proportional to 30,320.10, 45,480.15 and 9,543.60

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Solution

The fourth proportional to 30,320.10, 45,480.15 and 9,543.60 is: 14,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,320.10 : 45,480.15 = 9,543.60 : x
  2. Step 2: Convert to fraction form
    30,320.10/45,480.15 = 9,543.60/x
  3. Step 3: Cross multiply
    30,320.10x = 45,480.15 × 9,543.60
  4. Step 4: Simplify right side
    30,320.10x = 434,044,359.54
  5. Step 5: Solve for x
    x = 434,044,359.54/30,320.10
  6. Step 6: Final answer
    x = 14,315.40

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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.