Home / 28,345.04-39,118.52-15,772.16

Finding the Fourth Proportional to 28,345.04, 39,118.52 and 15,772.16

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Solution

The fourth proportional to 28,345.04, 39,118.52 and 15,772.16 is: 21,766.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.04 : 39,118.52 = 15,772.16 : x
  2. Step 2: Convert to fraction form
    28,345.04/39,118.52 = 15,772.16/x
  3. Step 3: Cross multiply
    28,345.04x = 39,118.52 × 15,772.16
  4. Step 4: Simplify right side
    28,345.04x = 616,983,556.40
  5. Step 5: Solve for x
    x = 616,983,556.40/28,345.04
  6. Step 6: Final answer
    x = 21,766.90

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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.