Home / 9,420.72-13,000.70-5,885.98

Finding the Fourth Proportional to 9,420.72, 13,000.70 and 5,885.98

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Solution

The fourth proportional to 9,420.72, 13,000.70 and 5,885.98 is: 8,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.72 : 13,000.70 = 5,885.98 : x
  2. Step 2: Convert to fraction form
    9,420.72/13,000.70 = 5,885.98/x
  3. Step 3: Cross multiply
    9,420.72x = 13,000.70 × 5,885.98
  4. Step 4: Simplify right side
    9,420.72x = 76,521,860.19
  5. Step 5: Solve for x
    x = 76,521,860.19/9,420.72
  6. Step 6: Final answer
    x = 8,122.72

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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.