Home / 28,420.07-42,627.26-8,698.79

Finding the Fourth Proportional to 28,420.07, 42,627.26 and 8,698.79

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Solution

The fourth proportional to 28,420.07, 42,627.26 and 8,698.79 is: 13,047.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420.07 : 42,627.26 = 8,698.79 : x
  2. Step 2: Convert to fraction form
    28,420.07/42,627.26 = 8,698.79/x
  3. Step 3: Cross multiply
    28,420.07x = 42,627.26 × 8,698.79
  4. Step 4: Simplify right side
    28,420.07x = 370,805,711.33
  5. Step 5: Solve for x
    x = 370,805,711.33/28,420.07
  6. Step 6: Final answer
    x = 13,047.32

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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.