Home / 30,220.80-45,309.60-13,567.20

Finding the Fourth Proportional to 30,220.80, 45,309.60 and 13,567.20

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Solution

The fourth proportional to 30,220.80, 45,309.60 and 13,567.20 is: 20,341.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.80 : 45,309.60 = 13,567.20 : x
  2. Step 2: Convert to fraction form
    30,220.80/45,309.60 = 13,567.20/x
  3. Step 3: Cross multiply
    30,220.80x = 45,309.60 × 13,567.20
  4. Step 4: Simplify right side
    30,220.80x = 614,724,405.12
  5. Step 5: Solve for x
    x = 614,724,405.12/30,220.80
  6. Step 6: Final answer
    x = 20,341.10

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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.