Home / 30,450.06-42,027.86-18,510.86

Finding the Fourth Proportional to 30,450.06, 42,027.86 and 18,510.86

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Solution

The fourth proportional to 30,450.06, 42,027.86 and 18,510.86 is: 25,549.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,450.06 : 42,027.86 = 18,510.86 : x
  2. Step 2: Convert to fraction form
    30,450.06/42,027.86 = 18,510.86/x
  3. Step 3: Cross multiply
    30,450.06x = 42,027.86 × 18,510.86
  4. Step 4: Simplify right side
    30,450.06x = 777,971,983.91
  5. Step 5: Solve for x
    x = 777,971,983.91/30,450.06
  6. Step 6: Final answer
    x = 25,549.11

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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.