Home / 21,970.53-30,319.16-11,898.83

Finding the Fourth Proportional to 21,970.53, 30,319.16 and 11,898.83

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Solution

The fourth proportional to 21,970.53, 30,319.16 and 11,898.83 is: 16,420.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.53 : 30,319.16 = 11,898.83 : x
  2. Step 2: Convert to fraction form
    21,970.53/30,319.16 = 11,898.83/x
  3. Step 3: Cross multiply
    21,970.53x = 30,319.16 × 11,898.83
  4. Step 4: Simplify right side
    21,970.53x = 360,762,546.89
  5. Step 5: Solve for x
    x = 360,762,546.89/21,970.53
  6. Step 6: Final answer
    x = 16,420.29

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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.