Home / 28,556.04-42,776.96-13,338.09

Finding the Fourth Proportional to 28,556.04, 42,776.96 and 13,338.09

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Solution

The fourth proportional to 28,556.04, 42,776.96 and 13,338.09 is: 19,980.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.04 : 42,776.96 = 13,338.09 : x
  2. Step 2: Convert to fraction form
    28,556.04/42,776.96 = 13,338.09/x
  3. Step 3: Cross multiply
    28,556.04x = 42,776.96 × 13,338.09
  4. Step 4: Simplify right side
    28,556.04x = 570,563,071.05
  5. Step 5: Solve for x
    x = 570,563,071.05/28,556.04
  6. Step 6: Final answer
    x = 19,980.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.