Home / 28,095.12-38,771.76-15,519.60

Finding the Fourth Proportional to 28,095.12, 38,771.76 and 15,519.60

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Solution

The fourth proportional to 28,095.12, 38,771.76 and 15,519.60 is: 21,417.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,095.12 : 38,771.76 = 15,519.60 : x
  2. Step 2: Convert to fraction form
    28,095.12/38,771.76 = 15,519.60/x
  3. Step 3: Cross multiply
    28,095.12x = 38,771.76 × 15,519.60
  4. Step 4: Simplify right side
    28,095.12x = 601,722,206.50
  5. Step 5: Solve for x
    x = 601,722,206.50/28,095.12
  6. Step 6: Final answer
    x = 21,417.32

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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.