Home / 20,775.06-28,642.68-14,055.84

Finding the Fourth Proportional to 20,775.06, 28,642.68 and 14,055.84

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Solution

The fourth proportional to 20,775.06, 28,642.68 and 14,055.84 is: 19,378.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.06 : 28,642.68 = 14,055.84 : x
  2. Step 2: Convert to fraction form
    20,775.06/28,642.68 = 14,055.84/x
  3. Step 3: Cross multiply
    20,775.06x = 28,642.68 × 14,055.84
  4. Step 4: Simplify right side
    20,775.06x = 402,596,927.25
  5. Step 5: Solve for x
    x = 402,596,927.25/20,775.06
  6. Step 6: Final answer
    x = 19,378.86

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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.