Home / 13,535.16-18,674.40-7,868.79

Finding the Fourth Proportional to 13,535.16, 18,674.40 and 7,868.79

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Solution

The fourth proportional to 13,535.16, 18,674.40 and 7,868.79 is: 10,856.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,535.16 : 18,674.40 = 7,868.79 : x
  2. Step 2: Convert to fraction form
    13,535.16/18,674.40 = 7,868.79/x
  3. Step 3: Cross multiply
    13,535.16x = 18,674.40 × 7,868.79
  4. Step 4: Simplify right side
    13,535.16x = 146,944,931.98
  5. Step 5: Solve for x
    x = 146,944,931.98/13,535.16
  6. Step 6: Final answer
    x = 10,856.53

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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.