Home / 13,510.14-18,650.07-7,921.50

Finding the Fourth Proportional to 13,510.14, 18,650.07 and 7,921.50

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Solution

The fourth proportional to 13,510.14, 18,650.07 and 7,921.50 is: 10,935.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.14 : 18,650.07 = 7,921.50 : x
  2. Step 2: Convert to fraction form
    13,510.14/18,650.07 = 7,921.50/x
  3. Step 3: Cross multiply
    13,510.14x = 18,650.07 × 7,921.50
  4. Step 4: Simplify right side
    13,510.14x = 147,736,529.51
  5. Step 5: Solve for x
    x = 147,736,529.51/13,510.14
  6. Step 6: Final answer
    x = 10,935.23

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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.