Home / 28,210.86-38,929.46-15,464.04

Finding the Fourth Proportional to 28,210.86, 38,929.46 and 15,464.04

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Solution

The fourth proportional to 28,210.86, 38,929.46 and 15,464.04 is: 21,339.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.86 : 38,929.46 = 15,464.04 : x
  2. Step 2: Convert to fraction form
    28,210.86/38,929.46 = 15,464.04/x
  3. Step 3: Cross multiply
    28,210.86x = 38,929.46 × 15,464.04
  4. Step 4: Simplify right side
    28,210.86x = 602,006,649.30
  5. Step 5: Solve for x
    x = 602,006,649.30/28,210.86
  6. Step 6: Final answer
    x = 21,339.54

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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.