Home / 10,109.60-15,164.40-7,323.20

Finding the Fourth Proportional to 10,109.60, 15,164.40 and 7,323.20

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Solution

The fourth proportional to 10,109.60, 15,164.40 and 7,323.20 is: 10,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109.60 : 15,164.40 = 7,323.20 : x
  2. Step 2: Convert to fraction form
    10,109.60/15,164.40 = 7,323.20/x
  3. Step 3: Cross multiply
    10,109.60x = 15,164.40 × 7,323.20
  4. Step 4: Simplify right side
    10,109.60x = 111,051,934.08
  5. Step 5: Solve for x
    x = 111,051,934.08/10,109.60
  6. Step 6: Final answer
    x = 10,984.80

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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.