Home / 30,140.80-45,218.40-14,545.60

Finding the Fourth Proportional to 30,140.80, 45,218.40 and 14,545.60

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Solution

The fourth proportional to 30,140.80, 45,218.40 and 14,545.60 is: 21,821.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,140.80 : 45,218.40 = 14,545.60 : x
  2. Step 2: Convert to fraction form
    30,140.80/45,218.40 = 14,545.60/x
  3. Step 3: Cross multiply
    30,140.80x = 45,218.40 × 14,545.60
  4. Step 4: Simplify right side
    30,140.80x = 657,728,759.04
  5. Step 5: Solve for x
    x = 657,728,759.04/30,140.80
  6. Step 6: Final answer
    x = 21,821.87

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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.