Home / 28,454.40-39,267.07-15,707.59

Finding the Fourth Proportional to 28,454.40, 39,267.07 and 15,707.59

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Solution

The fourth proportional to 28,454.40, 39,267.07 and 15,707.59 is: 21,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.40 : 39,267.07 = 15,707.59 : x
  2. Step 2: Convert to fraction form
    28,454.40/39,267.07 = 15,707.59/x
  3. Step 3: Cross multiply
    28,454.40x = 39,267.07 × 15,707.59
  4. Step 4: Simplify right side
    28,454.40x = 616,791,036.06
  5. Step 5: Solve for x
    x = 616,791,036.06/28,454.40
  6. Step 6: Final answer
    x = 21,676.47

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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.