Home / 20,448.60-28,219.56-11,374.08

Finding the Fourth Proportional to 20,448.60, 28,219.56 and 11,374.08

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Solution

The fourth proportional to 20,448.60, 28,219.56 and 11,374.08 is: 15,696.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.60 : 28,219.56 = 11,374.08 : x
  2. Step 2: Convert to fraction form
    20,448.60/28,219.56 = 11,374.08/x
  3. Step 3: Cross multiply
    20,448.60x = 28,219.56 × 11,374.08
  4. Step 4: Simplify right side
    20,448.60x = 320,971,533.00
  5. Step 5: Solve for x
    x = 320,971,533.00/20,448.60
  6. Step 6: Final answer
    x = 15,696.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.