Home / 15,373.18-21,215.42-9,404.74

Finding the Fourth Proportional to 15,373.18, 21,215.42 and 9,404.74

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Solution

The fourth proportional to 15,373.18, 21,215.42 and 9,404.74 is: 12,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,373.18 : 21,215.42 = 9,404.74 : x
  2. Step 2: Convert to fraction form
    15,373.18/21,215.42 = 9,404.74/x
  3. Step 3: Cross multiply
    15,373.18x = 21,215.42 × 9,404.74
  4. Step 4: Simplify right side
    15,373.18x = 199,525,462.07
  5. Step 5: Solve for x
    x = 199,525,462.07/15,373.18
  6. Step 6: Final answer
    x = 12,978.80

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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.