Home / 10,133.00-15,170.69-8,430.78

Finding the Fourth Proportional to 10,133.00, 15,170.69 and 8,430.78

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Solution

The fourth proportional to 10,133.00, 15,170.69 and 8,430.78 is: 12,622.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,133.00 : 15,170.69 = 8,430.78 : x
  2. Step 2: Convert to fraction form
    10,133.00/15,170.69 = 8,430.78/x
  3. Step 3: Cross multiply
    10,133.00x = 15,170.69 × 8,430.78
  4. Step 4: Simplify right side
    10,133.00x = 127,900,827.81
  5. Step 5: Solve for x
    x = 127,900,827.81/10,133.00
  6. Step 6: Final answer
    x = 12,622.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.