Home / 28,279.78-42,419.75-9,554.81

Finding the Fourth Proportional to 28,279.78, 42,419.75 and 9,554.81

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Solution

The fourth proportional to 28,279.78, 42,419.75 and 9,554.81 is: 14,332.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.78 : 42,419.75 = 9,554.81 : x
  2. Step 2: Convert to fraction form
    28,279.78/42,419.75 = 9,554.81/x
  3. Step 3: Cross multiply
    28,279.78x = 42,419.75 × 9,554.81
  4. Step 4: Simplify right side
    28,279.78x = 405,312,683.98
  5. Step 5: Solve for x
    x = 405,312,683.98/28,279.78
  6. Step 6: Final answer
    x = 14,332.24

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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.