Home / 28,510.26-39,345.36-15,935

Finding the Fourth Proportional to 28,510.26, 39,345.36 and 15,935

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Solution

The fourth proportional to 28,510.26, 39,345.36 and 15,935 is: 21,990.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.26 : 39,345.36 = 15,935 : x
  2. Step 2: Convert to fraction form
    28,510.26/39,345.36 = 15,935/x
  3. Step 3: Cross multiply
    28,510.26x = 39,345.36 × 15,935
  4. Step 4: Simplify right side
    28,510.26x = 626,968,311.60
  5. Step 5: Solve for x
    x = 626,968,311.60/28,510.26
  6. Step 6: Final answer
    x = 21,990.97

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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.