Home / 28,344.04-39,117.14-15,771.16

Finding the Fourth Proportional to 28,344.04, 39,117.14 and 15,771.16

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Solution

The fourth proportional to 28,344.04, 39,117.14 and 15,771.16 is: 21,765.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,344.04 : 39,117.14 = 15,771.16 : x
  2. Step 2: Convert to fraction form
    28,344.04/39,117.14 = 15,771.16/x
  3. Step 3: Cross multiply
    28,344.04x = 39,117.14 × 15,771.16
  4. Step 4: Simplify right side
    28,344.04x = 616,922,673.68
  5. Step 5: Solve for x
    x = 616,922,673.68/28,344.04
  6. Step 6: Final answer
    x = 21,765.52

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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.