Home / 28,387.40-39,174.62-16,457.67

Finding the Fourth Proportional to 28,387.40, 39,174.62 and 16,457.67

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Solution

The fourth proportional to 28,387.40, 39,174.62 and 16,457.67 is: 22,711.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.40 : 39,174.62 = 16,457.67 : x
  2. Step 2: Convert to fraction form
    28,387.40/39,174.62 = 16,457.67/x
  3. Step 3: Cross multiply
    28,387.40x = 39,174.62 × 16,457.67
  4. Step 4: Simplify right side
    28,387.40x = 644,722,968.34
  5. Step 5: Solve for x
    x = 644,722,968.34/28,387.40
  6. Step 6: Final answer
    x = 22,711.59

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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.