Home / 28,315.64-39,077.61-16,985.61

Finding the Fourth Proportional to 28,315.64, 39,077.61 and 16,985.61

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Solution

The fourth proportional to 28,315.64, 39,077.61 and 16,985.61 is: 23,441.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.64 : 39,077.61 = 16,985.61 : x
  2. Step 2: Convert to fraction form
    28,315.64/39,077.61 = 16,985.61/x
  3. Step 3: Cross multiply
    28,315.64x = 39,077.61 × 16,985.61
  4. Step 4: Simplify right side
    28,315.64x = 663,757,043.19
  5. Step 5: Solve for x
    x = 663,757,043.19/28,315.64
  6. Step 6: Final answer
    x = 23,441.36

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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.