Home / 16,388.31-22,615.87-9,315.19

Finding the Fourth Proportional to 16,388.31, 22,615.87 and 9,315.19

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Solution

The fourth proportional to 16,388.31, 22,615.87 and 9,315.19 is: 12,854.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,388.31 : 22,615.87 = 9,315.19 : x
  2. Step 2: Convert to fraction form
    16,388.31/22,615.87 = 9,315.19/x
  3. Step 3: Cross multiply
    16,388.31x = 22,615.87 × 9,315.19
  4. Step 4: Simplify right side
    16,388.31x = 210,671,126.07
  5. Step 5: Solve for x
    x = 210,671,126.07/16,388.31
  6. Step 6: Final answer
    x = 12,854.96

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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.