Home / 28,740.67-39,658.59-15,990.46

Finding the Fourth Proportional to 28,740.67, 39,658.59 and 15,990.46

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Solution

The fourth proportional to 28,740.67, 39,658.59 and 15,990.46 is: 22,064.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740.67 : 39,658.59 = 15,990.46 : x
  2. Step 2: Convert to fraction form
    28,740.67/39,658.59 = 15,990.46/x
  3. Step 3: Cross multiply
    28,740.67x = 39,658.59 × 15,990.46
  4. Step 4: Simplify right side
    28,740.67x = 634,159,176.01
  5. Step 5: Solve for x
    x = 634,159,176.01/28,740.67
  6. Step 6: Final answer
    x = 22,064.87

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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.