Home / 21,929.90-30,263.52-13,313.58

Finding the Fourth Proportional to 21,929.90, 30,263.52 and 13,313.58

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Solution

The fourth proportional to 21,929.90, 30,263.52 and 13,313.58 is: 18,372.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.90 : 30,263.52 = 13,313.58 : x
  2. Step 2: Convert to fraction form
    21,929.90/30,263.52 = 13,313.58/x
  3. Step 3: Cross multiply
    21,929.90x = 30,263.52 × 13,313.58
  4. Step 4: Simplify right side
    21,929.90x = 402,915,794.60
  5. Step 5: Solve for x
    x = 402,915,794.60/21,929.90
  6. Step 6: Final answer
    x = 18,372.90

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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.