Home / 11,931.80-16,466.10-7,215.08

Finding the Fourth Proportional to 11,931.80, 16,466.10 and 7,215.08

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Solution

The fourth proportional to 11,931.80, 16,466.10 and 7,215.08 is: 9,956.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.80 : 16,466.10 = 7,215.08 : x
  2. Step 2: Convert to fraction form
    11,931.80/16,466.10 = 7,215.08/x
  3. Step 3: Cross multiply
    11,931.80x = 16,466.10 × 7,215.08
  4. Step 4: Simplify right side
    11,931.80x = 118,804,228.79
  5. Step 5: Solve for x
    x = 118,804,228.79/11,931.80
  6. Step 6: Final answer
    x = 9,956.94

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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.