Home / 15,395.41-21,245.90-9,020.47

Finding the Fourth Proportional to 15,395.41, 21,245.90 and 9,020.47

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Solution

The fourth proportional to 15,395.41, 21,245.90 and 9,020.47 is: 12,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.41 : 21,245.90 = 9,020.47 : x
  2. Step 2: Convert to fraction form
    15,395.41/21,245.90 = 9,020.47/x
  3. Step 3: Cross multiply
    15,395.41x = 21,245.90 × 9,020.47
  4. Step 4: Simplify right side
    15,395.41x = 191,648,056.69
  5. Step 5: Solve for x
    x = 191,648,056.69/15,395.41
  6. Step 6: Final answer
    x = 12,448.39

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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.