Home / 15,485.08-21,362.32-9,109.68

Finding the Fourth Proportional to 15,485.08, 21,362.32 and 9,109.68

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Solution

The fourth proportional to 15,485.08, 21,362.32 and 9,109.68 is: 12,567.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.08 : 21,362.32 = 9,109.68 : x
  2. Step 2: Convert to fraction form
    15,485.08/21,362.32 = 9,109.68/x
  3. Step 3: Cross multiply
    15,485.08x = 21,362.32 × 9,109.68
  4. Step 4: Simplify right side
    15,485.08x = 194,603,899.26
  5. Step 5: Solve for x
    x = 194,603,899.26/15,485.08
  6. Step 6: Final answer
    x = 12,567.19

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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.