Home / 28,513.52-39,345.23-15,764.98

Finding the Fourth Proportional to 28,513.52, 39,345.23 and 15,764.98

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Solution

The fourth proportional to 28,513.52, 39,345.23 and 15,764.98 is: 21,753.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.52 : 39,345.23 = 15,764.98 : x
  2. Step 2: Convert to fraction form
    28,513.52/39,345.23 = 15,764.98/x
  3. Step 3: Cross multiply
    28,513.52x = 39,345.23 × 15,764.98
  4. Step 4: Simplify right side
    28,513.52x = 620,276,685.22
  5. Step 5: Solve for x
    x = 620,276,685.22/28,513.52
  6. Step 6: Final answer
    x = 21,753.77

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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.