Home / 21,750.38-30,014.52-12,319.01

Finding the Fourth Proportional to 21,750.38, 30,014.52 and 12,319.01

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Solution

The fourth proportional to 21,750.38, 30,014.52 and 12,319.01 is: 16,999.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.38 : 30,014.52 = 12,319.01 : x
  2. Step 2: Convert to fraction form
    21,750.38/30,014.52 = 12,319.01/x
  3. Step 3: Cross multiply
    21,750.38x = 30,014.52 × 12,319.01
  4. Step 4: Simplify right side
    21,750.38x = 369,749,172.03
  5. Step 5: Solve for x
    x = 369,749,172.03/21,750.38
  6. Step 6: Final answer
    x = 16,999.66

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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.