Home / 13,139.28-19,698.48-7,586.34

Finding the Fourth Proportional to 13,139.28, 19,698.48 and 7,586.34

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Solution

The fourth proportional to 13,139.28, 19,698.48 and 7,586.34 is: 11,373.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.28 : 19,698.48 = 7,586.34 : x
  2. Step 2: Convert to fraction form
    13,139.28/19,698.48 = 7,586.34/x
  3. Step 3: Cross multiply
    13,139.28x = 19,698.48 × 7,586.34
  4. Step 4: Simplify right side
    13,139.28x = 149,439,366.76
  5. Step 5: Solve for x
    x = 149,439,366.76/13,139.28
  6. Step 6: Final answer
    x = 11,373.48

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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.