Home / 13,579.79-18,739.14-7,529.58

Finding the Fourth Proportional to 13,579.79, 18,739.14 and 7,529.58

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Solution

The fourth proportional to 13,579.79, 18,739.14 and 7,529.58 is: 10,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.79 : 18,739.14 = 7,529.58 : x
  2. Step 2: Convert to fraction form
    13,579.79/18,739.14 = 7,529.58/x
  3. Step 3: Cross multiply
    13,579.79x = 18,739.14 × 7,529.58
  4. Step 4: Simplify right side
    13,579.79x = 141,097,853.76
  5. Step 5: Solve for x
    x = 141,097,853.76/13,579.79
  6. Step 6: Final answer
    x = 10,390.28

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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.