Home / 15,379.90-21,226.52-9,410.60

Finding the Fourth Proportional to 15,379.90, 21,226.52 and 9,410.60

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Solution

The fourth proportional to 15,379.90, 21,226.52 and 9,410.60 is: 12,988.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.90 : 21,226.52 = 9,410.60 : x
  2. Step 2: Convert to fraction form
    15,379.90/21,226.52 = 9,410.60/x
  3. Step 3: Cross multiply
    15,379.90x = 21,226.52 × 9,410.60
  4. Step 4: Simplify right side
    15,379.90x = 199,754,289.11
  5. Step 5: Solve for x
    x = 199,754,289.11/15,379.90
  6. Step 6: Final answer
    x = 12,988.01

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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.