Home / 28,289.16-42,369.15-13,508.49

Finding the Fourth Proportional to 28,289.16, 42,369.15 and 13,508.49

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Solution

The fourth proportional to 28,289.16, 42,369.15 and 13,508.49 is: 20,231.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.16 : 42,369.15 = 13,508.49 : x
  2. Step 2: Convert to fraction form
    28,289.16/42,369.15 = 13,508.49/x
  3. Step 3: Cross multiply
    28,289.16x = 42,369.15 × 13,508.49
  4. Step 4: Simplify right side
    28,289.16x = 572,343,239.08
  5. Step 5: Solve for x
    x = 572,343,239.08/28,289.16
  6. Step 6: Final answer
    x = 20,231.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.