Home / 13,629.84-20,430.18-7,049.40

Finding the Fourth Proportional to 13,629.84, 20,430.18 and 7,049.40

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Solution

The fourth proportional to 13,629.84, 20,430.18 and 7,049.40 is: 10,566.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.84 : 20,430.18 = 7,049.40 : x
  2. Step 2: Convert to fraction form
    13,629.84/20,430.18 = 7,049.40/x
  3. Step 3: Cross multiply
    13,629.84x = 20,430.18 × 7,049.40
  4. Step 4: Simplify right side
    13,629.84x = 144,020,510.89
  5. Step 5: Solve for x
    x = 144,020,510.89/13,629.84
  6. Step 6: Final answer
    x = 10,566.56

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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.