Home / 28,976.58-39,987.81-16,403.76

Finding the Fourth Proportional to 28,976.58, 39,987.81 and 16,403.76

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Solution

The fourth proportional to 28,976.58, 39,987.81 and 16,403.76 is: 22,637.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,976.58 : 39,987.81 = 16,403.76 : x
  2. Step 2: Convert to fraction form
    28,976.58/39,987.81 = 16,403.76/x
  3. Step 3: Cross multiply
    28,976.58x = 39,987.81 × 16,403.76
  4. Step 4: Simplify right side
    28,976.58x = 655,950,438.17
  5. Step 5: Solve for x
    x = 655,950,438.17/28,976.58
  6. Step 6: Final answer
    x = 22,637.26

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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.