Home / 21,962.46-30,321.27-13,590.30

Finding the Fourth Proportional to 21,962.46, 30,321.27 and 13,590.30

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Solution

The fourth proportional to 21,962.46, 30,321.27 and 13,590.30 is: 18,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,962.46 : 30,321.27 = 13,590.30 : x
  2. Step 2: Convert to fraction form
    21,962.46/30,321.27 = 13,590.30/x
  3. Step 3: Cross multiply
    21,962.46x = 30,321.27 × 13,590.30
  4. Step 4: Simplify right side
    21,962.46x = 412,075,155.68
  5. Step 5: Solve for x
    x = 412,075,155.68/21,962.46
  6. Step 6: Final answer
    x = 18,762.70

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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.