Home / 15,212.58-21,100.77-14,807.98

Finding the Fourth Proportional to 15,212.58, 21,100.77 and 14,807.98

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Solution

The fourth proportional to 15,212.58, 21,100.77 and 14,807.98 is: 20,539.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,212.58 : 21,100.77 = 14,807.98 : x
  2. Step 2: Convert to fraction form
    15,212.58/21,100.77 = 14,807.98/x
  3. Step 3: Cross multiply
    15,212.58x = 21,100.77 × 14,807.98
  4. Step 4: Simplify right side
    15,212.58x = 312,459,785.23
  5. Step 5: Solve for x
    x = 312,459,785.23/15,212.58
  6. Step 6: Final answer
    x = 20,539.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.