Home / 20,416.32-28,152-14,045.76

Finding the Fourth Proportional to 20,416.32, 28,152 and 14,045.76

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Solution

The fourth proportional to 20,416.32, 28,152 and 14,045.76 is: 19,367.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.32 : 28,152 = 14,045.76 : x
  2. Step 2: Convert to fraction form
    20,416.32/28,152 = 14,045.76/x
  3. Step 3: Cross multiply
    20,416.32x = 28,152 × 14,045.76
  4. Step 4: Simplify right side
    20,416.32x = 395,416,235.52
  5. Step 5: Solve for x
    x = 395,416,235.52/20,416.32
  6. Step 6: Final answer
    x = 19,367.65

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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.