Home / 15,451.04-21,314.40-9,165.44

Finding the Fourth Proportional to 15,451.04, 21,314.40 and 9,165.44

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Solution

The fourth proportional to 15,451.04, 21,314.40 and 9,165.44 is: 12,643.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.04 : 21,314.40 = 9,165.44 : x
  2. Step 2: Convert to fraction form
    15,451.04/21,314.40 = 9,165.44/x
  3. Step 3: Cross multiply
    15,451.04x = 21,314.40 × 9,165.44
  4. Step 4: Simplify right side
    15,451.04x = 195,355,854.34
  5. Step 5: Solve for x
    x = 195,355,854.34/15,451.04
  6. Step 6: Final answer
    x = 12,643.54

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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.