Home / 28,678.55-39,570.40-17,345.83

Finding the Fourth Proportional to 28,678.55, 39,570.40 and 17,345.83

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Solution

The fourth proportional to 28,678.55, 39,570.40 and 17,345.83 is: 23,933.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.55 : 39,570.40 = 17,345.83 : x
  2. Step 2: Convert to fraction form
    28,678.55/39,570.40 = 17,345.83/x
  3. Step 3: Cross multiply
    28,678.55x = 39,570.40 × 17,345.83
  4. Step 4: Simplify right side
    28,678.55x = 686,381,289.14
  5. Step 5: Solve for x
    x = 686,381,289.14/28,678.55
  6. Step 6: Final answer
    x = 23,933.62

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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.