Home / 14,090.10-19,438.71-8,422.74

Finding the Fourth Proportional to 14,090.10, 19,438.71 and 8,422.74

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Solution

The fourth proportional to 14,090.10, 19,438.71 and 8,422.74 is: 11,620.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,090.10 : 19,438.71 = 8,422.74 : x
  2. Step 2: Convert to fraction form
    14,090.10/19,438.71 = 8,422.74/x
  3. Step 3: Cross multiply
    14,090.10x = 19,438.71 × 8,422.74
  4. Step 4: Simplify right side
    14,090.10x = 163,727,200.27
  5. Step 5: Solve for x
    x = 163,727,200.27/14,090.10
  6. Step 6: Final answer
    x = 11,620.02

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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.