Home / 28,501.08-39,352.08-18,435.20

Finding the Fourth Proportional to 28,501.08, 39,352.08 and 18,435.20

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Solution

The fourth proportional to 28,501.08, 39,352.08 and 18,435.20 is: 25,453.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,501.08 : 39,352.08 = 18,435.20 : x
  2. Step 2: Convert to fraction form
    28,501.08/39,352.08 = 18,435.20/x
  3. Step 3: Cross multiply
    28,501.08x = 39,352.08 × 18,435.20
  4. Step 4: Simplify right side
    28,501.08x = 725,463,465.22
  5. Step 5: Solve for x
    x = 725,463,465.22/28,501.08
  6. Step 6: Final answer
    x = 25,453.89

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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.