Home / 28,740.59-39,639.50-18,672.26

Finding the Fourth Proportional to 28,740.59, 39,639.50 and 18,672.26

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Solution

The fourth proportional to 28,740.59, 39,639.50 and 18,672.26 is: 25,753.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740.59 : 39,639.50 = 18,672.26 : x
  2. Step 2: Convert to fraction form
    28,740.59/39,639.50 = 18,672.26/x
  3. Step 3: Cross multiply
    28,740.59x = 39,639.50 × 18,672.26
  4. Step 4: Simplify right side
    28,740.59x = 740,158,758.71
  5. Step 5: Solve for x
    x = 740,158,758.71/28,740.59
  6. Step 6: Final answer
    x = 25,753.09

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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.