Home / 13,470.24-18,598.16-8,436.64

Finding the Fourth Proportional to 13,470.24, 18,598.16 and 8,436.64

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Solution

The fourth proportional to 13,470.24, 18,598.16 and 8,436.64 is: 11,648.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.24 : 18,598.16 = 8,436.64 : x
  2. Step 2: Convert to fraction form
    13,470.24/18,598.16 = 8,436.64/x
  3. Step 3: Cross multiply
    13,470.24x = 18,598.16 × 8,436.64
  4. Step 4: Simplify right side
    13,470.24x = 156,905,980.58
  5. Step 5: Solve for x
    x = 156,905,980.58/13,470.24
  6. Step 6: Final answer
    x = 11,648.34

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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.