Home / 28,510.79-39,343.30-15,763.22

Finding the Fourth Proportional to 28,510.79, 39,343.30 and 15,763.22

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Solution

The fourth proportional to 28,510.79, 39,343.30 and 15,763.22 is: 21,752.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.79 : 39,343.30 = 15,763.22 : x
  2. Step 2: Convert to fraction form
    28,510.79/39,343.30 = 15,763.22/x
  3. Step 3: Cross multiply
    28,510.79x = 39,343.30 × 15,763.22
  4. Step 4: Simplify right side
    28,510.79x = 620,177,191.78
  5. Step 5: Solve for x
    x = 620,177,191.78/28,510.79
  6. Step 6: Final answer
    x = 21,752.37

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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.