Home / 30,109.30-45,166.14-10,387.60

Finding the Fourth Proportional to 30,109.30, 45,166.14 and 10,387.60

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Solution

The fourth proportional to 30,109.30, 45,166.14 and 10,387.60 is: 15,582.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109.30 : 45,166.14 = 10,387.60 : x
  2. Step 2: Convert to fraction form
    30,109.30/45,166.14 = 10,387.60/x
  3. Step 3: Cross multiply
    30,109.30x = 45,166.14 × 10,387.60
  4. Step 4: Simplify right side
    30,109.30x = 469,167,795.86
  5. Step 5: Solve for x
    x = 469,167,795.86/30,109.30
  6. Step 6: Final answer
    x = 15,582.16

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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.