Home / 15,148.32-20,904.84-8,433.60

Finding the Fourth Proportional to 15,148.32, 20,904.84 and 8,433.60

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Solution

The fourth proportional to 15,148.32, 20,904.84 and 8,433.60 is: 11,638.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,148.32 : 20,904.84 = 8,433.60 : x
  2. Step 2: Convert to fraction form
    15,148.32/20,904.84 = 8,433.60/x
  3. Step 3: Cross multiply
    15,148.32x = 20,904.84 × 8,433.60
  4. Step 4: Simplify right side
    15,148.32x = 176,303,058.62
  5. Step 5: Solve for x
    x = 176,303,058.62/15,148.32
  6. Step 6: Final answer
    x = 11,638.46

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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.