Home / 28,510.91-39,344.37-15,763.77

Finding the Fourth Proportional to 28,510.91, 39,344.37 and 15,763.77

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Solution

The fourth proportional to 28,510.91, 39,344.37 and 15,763.77 is: 21,753.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.91 : 39,344.37 = 15,763.77 : x
  2. Step 2: Convert to fraction form
    28,510.91/39,344.37 = 15,763.77/x
  3. Step 3: Cross multiply
    28,510.91x = 39,344.37 × 15,763.77
  4. Step 4: Simplify right side
    28,510.91x = 620,215,599.47
  5. Step 5: Solve for x
    x = 620,215,599.47/28,510.91
  6. Step 6: Final answer
    x = 21,753.62

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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.