Home / 9,439.40-14,159.10-8,402.60

Finding the Fourth Proportional to 9,439.40, 14,159.10 and 8,402.60

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Solution

The fourth proportional to 9,439.40, 14,159.10 and 8,402.60 is: 12,603.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,439.40 : 14,159.10 = 8,402.60 : x
  2. Step 2: Convert to fraction form
    9,439.40/14,159.10 = 8,402.60/x
  3. Step 3: Cross multiply
    9,439.40x = 14,159.10 × 8,402.60
  4. Step 4: Simplify right side
    9,439.40x = 118,973,253.66
  5. Step 5: Solve for x
    x = 118,973,253.66/9,439.40
  6. Step 6: Final answer
    x = 12,603.90

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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.