Home / 12,302.62-18,423.07-7,603.31

Finding the Fourth Proportional to 12,302.62, 18,423.07 and 7,603.31

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Solution

The fourth proportional to 12,302.62, 18,423.07 and 7,603.31 is: 11,385.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302.62 : 18,423.07 = 7,603.31 : x
  2. Step 2: Convert to fraction form
    12,302.62/18,423.07 = 7,603.31/x
  3. Step 3: Cross multiply
    12,302.62x = 18,423.07 × 7,603.31
  4. Step 4: Simplify right side
    12,302.62x = 140,076,312.36
  5. Step 5: Solve for x
    x = 140,076,312.36/12,302.62
  6. Step 6: Final answer
    x = 11,385.89

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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.