Home / 15,518.34-21,417.21-9,230.58

Finding the Fourth Proportional to 15,518.34, 21,417.21 and 9,230.58

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Solution

The fourth proportional to 15,518.34, 21,417.21 and 9,230.58 is: 12,739.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.34 : 21,417.21 = 9,230.58 : x
  2. Step 2: Convert to fraction form
    15,518.34/21,417.21 = 9,230.58/x
  3. Step 3: Cross multiply
    15,518.34x = 21,417.21 × 9,230.58
  4. Step 4: Simplify right side
    15,518.34x = 197,693,270.28
  5. Step 5: Solve for x
    x = 197,693,270.28/15,518.34
  6. Step 6: Final answer
    x = 12,739.33

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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.