Home / 13,653.28-18,835.23-9,870.45

Finding the Fourth Proportional to 13,653.28, 18,835.23 and 9,870.45

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Solution

The fourth proportional to 13,653.28, 18,835.23 and 9,870.45 is: 13,616.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.28 : 18,835.23 = 9,870.45 : x
  2. Step 2: Convert to fraction form
    13,653.28/18,835.23 = 9,870.45/x
  3. Step 3: Cross multiply
    13,653.28x = 18,835.23 × 9,870.45
  4. Step 4: Simplify right side
    13,653.28x = 185,912,195.95
  5. Step 5: Solve for x
    x = 185,912,195.95/13,653.28
  6. Step 6: Final answer
    x = 13,616.67

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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.