Home / 28,510.72-39,344.55-15,764.23

Finding the Fourth Proportional to 28,510.72, 39,344.55 and 15,764.23

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Solution

The fourth proportional to 28,510.72, 39,344.55 and 15,764.23 is: 21,754.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.72 : 39,344.55 = 15,764.23 : x
  2. Step 2: Convert to fraction form
    28,510.72/39,344.55 = 15,764.23/x
  3. Step 3: Cross multiply
    28,510.72x = 39,344.55 × 15,764.23
  4. Step 4: Simplify right side
    28,510.72x = 620,236,525.51
  5. Step 5: Solve for x
    x = 620,236,525.51/28,510.72
  6. Step 6: Final answer
    x = 21,754.50

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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.