Home / 28,920.17-39,905.58-16,987.35

Finding the Fourth Proportional to 28,920.17, 39,905.58 and 16,987.35

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Solution

The fourth proportional to 28,920.17, 39,905.58 and 16,987.35 is: 23,440.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.17 : 39,905.58 = 16,987.35 : x
  2. Step 2: Convert to fraction form
    28,920.17/39,905.58 = 16,987.35/x
  3. Step 3: Cross multiply
    28,920.17x = 39,905.58 × 16,987.35
  4. Step 4: Simplify right side
    28,920.17x = 677,890,054.41
  5. Step 5: Solve for x
    x = 677,890,054.41/28,920.17
  6. Step 6: Final answer
    x = 23,440.05

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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.