Home / 11,931.89-16,466.09-7,215.26

Finding the Fourth Proportional to 11,931.89, 16,466.09 and 7,215.26

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Solution

The fourth proportional to 11,931.89, 16,466.09 and 7,215.26 is: 9,957.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.89 : 16,466.09 = 7,215.26 : x
  2. Step 2: Convert to fraction form
    11,931.89/16,466.09 = 7,215.26/x
  3. Step 3: Cross multiply
    11,931.89x = 16,466.09 × 7,215.26
  4. Step 4: Simplify right side
    11,931.89x = 118,807,002.13
  5. Step 5: Solve for x
    x = 118,807,002.13/11,931.89
  6. Step 6: Final answer
    x = 9,957.10

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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.