Home / 20,455.74-28,106.60-16,256.70

Finding the Fourth Proportional to 20,455.74, 28,106.60 and 16,256.70

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Solution

The fourth proportional to 20,455.74, 28,106.60 and 16,256.70 is: 22,337.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.74 : 28,106.60 = 16,256.70 : x
  2. Step 2: Convert to fraction form
    20,455.74/28,106.60 = 16,256.70/x
  3. Step 3: Cross multiply
    20,455.74x = 28,106.60 × 16,256.70
  4. Step 4: Simplify right side
    20,455.74x = 456,920,482.94
  5. Step 5: Solve for x
    x = 456,920,482.94/20,455.74
  6. Step 6: Final answer
    x = 22,337.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.