Home / 20,667,004.80-30,986,510.40-10,561,315.20

Finding the Fourth Proportional to 20,667,004.80, 30,986,510.40 and 10,561,315.20

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Solution

The fourth proportional to 20,667,004.80, 30,986,510.40 and 10,561,315.20 is: 15,834,820.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667,004.80 : 30,986,510.40 = 10,561,315.20 : x
  2. Step 2: Convert to fraction form
    20,667,004.80/30,986,510.40 = 10,561,315.20/x
  3. Step 3: Cross multiply
    20,667,004.80x = 30,986,510.40 × 10,561,315.20
  4. Step 4: Simplify right side
    20,667,004.80x = 327,258,303,282,478.06
  5. Step 5: Solve for x
    x = 327,258,303,282,478.06/20,667,004.80
  6. Step 6: Final answer
    x = 15,834,820.11

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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.