Home / 30,231.12-45,362.04-13,587.80

Finding the Fourth Proportional to 30,231.12, 45,362.04 and 13,587.80

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Solution

The fourth proportional to 30,231.12, 45,362.04 and 13,587.80 is: 20,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,231.12 : 45,362.04 = 13,587.80 : x
  2. Step 2: Convert to fraction form
    30,231.12/45,362.04 = 13,587.80/x
  3. Step 3: Cross multiply
    30,231.12x = 45,362.04 × 13,587.80
  4. Step 4: Simplify right side
    30,231.12x = 616,370,327.11
  5. Step 5: Solve for x
    x = 616,370,327.11/30,231.12
  6. Step 6: Final answer
    x = 20,388.60

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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.