Home / 28,155,984.64-38,855,258.80-15,278,928.64

Finding the Fourth Proportional to 28,155,984.64, 38,855,258.80 and 15,278,928.64

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Solution

The fourth proportional to 28,155,984.64, 38,855,258.80 and 15,278,928.64 is: 21,084,921.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155,984.64 : 38,855,258.80 = 15,278,928.64 : x
  2. Step 2: Convert to fraction form
    28,155,984.64/38,855,258.80 = 15,278,928.64/x
  3. Step 3: Cross multiply
    28,155,984.64x = 38,855,258.80 × 15,278,928.64
  4. Step 4: Simplify right side
    28,155,984.64x = 593,666,726,493,932
  5. Step 5: Solve for x
    x = 593,666,726,493,932/28,155,984.64
  6. Step 6: Final answer
    x = 21,084,921.52

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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.