Home / 20,430.34-30,634.74-7,098.18

Finding the Fourth Proportional to 20,430.34, 30,634.74 and 7,098.18

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Solution

The fourth proportional to 20,430.34, 30,634.74 and 7,098.18 is: 10,643.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.34 : 30,634.74 = 7,098.18 : x
  2. Step 2: Convert to fraction form
    20,430.34/30,634.74 = 7,098.18/x
  3. Step 3: Cross multiply
    20,430.34x = 30,634.74 × 7,098.18
  4. Step 4: Simplify right side
    20,430.34x = 217,450,986.16
  5. Step 5: Solve for x
    x = 217,450,986.16/20,430.34
  6. Step 6: Final answer
    x = 10,643.53

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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.