Home / 28,923.12-39,899.52-19,475.28

Finding the Fourth Proportional to 28,923.12, 39,899.52 and 19,475.28

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Solution

The fourth proportional to 28,923.12, 39,899.52 and 19,475.28 is: 26,866.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,923.12 : 39,899.52 = 19,475.28 : x
  2. Step 2: Convert to fraction form
    28,923.12/39,899.52 = 19,475.28/x
  3. Step 3: Cross multiply
    28,923.12x = 39,899.52 × 19,475.28
  4. Step 4: Simplify right side
    28,923.12x = 777,054,323.87
  5. Step 5: Solve for x
    x = 777,054,323.87/28,923.12
  6. Step 6: Final answer
    x = 26,866.20

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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.