Home / 28,680.83-39,580.04-15,935.18

Finding the Fourth Proportional to 28,680.83, 39,580.04 and 15,935.18

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Solution

The fourth proportional to 28,680.83, 39,580.04 and 15,935.18 is: 21,990.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680.83 : 39,580.04 = 15,935.18 : x
  2. Step 2: Convert to fraction form
    28,680.83/39,580.04 = 15,935.18/x
  3. Step 3: Cross multiply
    28,680.83x = 39,580.04 × 15,935.18
  4. Step 4: Simplify right side
    28,680.83x = 630,714,903.74
  5. Step 5: Solve for x
    x = 630,714,903.74/28,680.83
  6. Step 6: Final answer
    x = 21,990.82

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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.