Home / 15,070.26-20,798.89-9,900.55

Finding the Fourth Proportional to 15,070.26, 20,798.89 and 9,900.55

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Solution

The fourth proportional to 15,070.26, 20,798.89 and 9,900.55 is: 13,664.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,070.26 : 20,798.89 = 9,900.55 : x
  2. Step 2: Convert to fraction form
    15,070.26/20,798.89 = 9,900.55/x
  3. Step 3: Cross multiply
    15,070.26x = 20,798.89 × 9,900.55
  4. Step 4: Simplify right side
    15,070.26x = 205,920,450.39
  5. Step 5: Solve for x
    x = 205,920,450.39/15,070.26
  6. Step 6: Final answer
    x = 13,664.03

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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.