Home / 28,451.69-39,265.56-15,707.40

Finding the Fourth Proportional to 28,451.69, 39,265.56 and 15,707.40

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Solution

The fourth proportional to 28,451.69, 39,265.56 and 15,707.40 is: 21,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.69 : 39,265.56 = 15,707.40 : x
  2. Step 2: Convert to fraction form
    28,451.69/39,265.56 = 15,707.40/x
  3. Step 3: Cross multiply
    28,451.69x = 39,265.56 × 15,707.40
  4. Step 4: Simplify right side
    28,451.69x = 616,759,857.14
  5. Step 5: Solve for x
    x = 616,759,857.14/28,451.69
  6. Step 6: Final answer
    x = 21,677.45

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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.