Home / 28,402.04-39,215.68-18,336.36

Finding the Fourth Proportional to 28,402.04, 39,215.68 and 18,336.36

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Solution

The fourth proportional to 28,402.04, 39,215.68 and 18,336.36 is: 25,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402.04 : 39,215.68 = 18,336.36 : x
  2. Step 2: Convert to fraction form
    28,402.04/39,215.68 = 18,336.36/x
  3. Step 3: Cross multiply
    28,402.04x = 39,215.68 × 18,336.36
  4. Step 4: Simplify right side
    28,402.04x = 719,072,826.12
  5. Step 5: Solve for x
    x = 719,072,826.12/28,402.04
  6. Step 6: Final answer
    x = 25,317.65

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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.