Home / 9,420.38-14,135.16-3,875.40

Finding the Fourth Proportional to 9,420.38, 14,135.16 and 3,875.40

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Solution

The fourth proportional to 9,420.38, 14,135.16 and 3,875.40 is: 5,814.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.38 : 14,135.16 = 3,875.40 : x
  2. Step 2: Convert to fraction form
    9,420.38/14,135.16 = 3,875.40/x
  3. Step 3: Cross multiply
    9,420.38x = 14,135.16 × 3,875.40
  4. Step 4: Simplify right side
    9,420.38x = 54,779,399.06
  5. Step 5: Solve for x
    x = 54,779,399.06/9,420.38
  6. Step 6: Final answer
    x = 5,814.99

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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.