Home / 21,317.40-31,976.10-7,466.40

Finding the Fourth Proportional to 21,317.40, 31,976.10 and 7,466.40

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Solution

The fourth proportional to 21,317.40, 31,976.10 and 7,466.40 is: 11,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.40 : 31,976.10 = 7,466.40 : x
  2. Step 2: Convert to fraction form
    21,317.40/31,976.10 = 7,466.40/x
  3. Step 3: Cross multiply
    21,317.40x = 31,976.10 × 7,466.40
  4. Step 4: Simplify right side
    21,317.40x = 238,746,353.04
  5. Step 5: Solve for x
    x = 238,746,353.04/21,317.40
  6. Step 6: Final answer
    x = 11,199.60

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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.