Home / 28,345.81-39,104.12-18,277.48

Finding the Fourth Proportional to 28,345.81, 39,104.12 and 18,277.48

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Solution

The fourth proportional to 28,345.81, 39,104.12 and 18,277.48 is: 25,214.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.81 : 39,104.12 = 18,277.48 : x
  2. Step 2: Convert to fraction form
    28,345.81/39,104.12 = 18,277.48/x
  3. Step 3: Cross multiply
    28,345.81x = 39,104.12 × 18,277.48
  4. Step 4: Simplify right side
    28,345.81x = 714,724,768.03
  5. Step 5: Solve for x
    x = 714,724,768.03/28,345.81
  6. Step 6: Final answer
    x = 25,214.48

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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.