Home / 28,279.51-39,021.38-16,340.54

Finding the Fourth Proportional to 28,279.51, 39,021.38 and 16,340.54

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Solution

The fourth proportional to 28,279.51, 39,021.38 and 16,340.54 is: 22,547.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.51 : 39,021.38 = 16,340.54 : x
  2. Step 2: Convert to fraction form
    28,279.51/39,021.38 = 16,340.54/x
  3. Step 3: Cross multiply
    28,279.51x = 39,021.38 × 16,340.54
  4. Step 4: Simplify right side
    28,279.51x = 637,630,534.46
  5. Step 5: Solve for x
    x = 637,630,534.46/28,279.51
  6. Step 6: Final answer
    x = 22,547.44

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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.