Home / 28,740.72-39,662.10-15,993.84

Finding the Fourth Proportional to 28,740.72, 39,662.10 and 15,993.84

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Solution

The fourth proportional to 28,740.72, 39,662.10 and 15,993.84 is: 22,071.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740.72 : 39,662.10 = 15,993.84 : x
  2. Step 2: Convert to fraction form
    28,740.72/39,662.10 = 15,993.84/x
  3. Step 3: Cross multiply
    28,740.72x = 39,662.10 × 15,993.84
  4. Step 4: Simplify right side
    28,740.72x = 634,349,281.46
  5. Step 5: Solve for x
    x = 634,349,281.46/28,740.72
  6. Step 6: Final answer
    x = 22,071.45

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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.