Home / 18,945.08-26,138.94-10,985.72

Finding the Fourth Proportional to 18,945.08, 26,138.94 and 10,985.72

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Solution

The fourth proportional to 18,945.08, 26,138.94 and 10,985.72 is: 15,157.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.08 : 26,138.94 = 10,985.72 : x
  2. Step 2: Convert to fraction form
    18,945.08/26,138.94 = 10,985.72/x
  3. Step 3: Cross multiply
    18,945.08x = 26,138.94 × 10,985.72
  4. Step 4: Simplify right side
    18,945.08x = 287,155,075.94
  5. Step 5: Solve for x
    x = 287,155,075.94/18,945.08
  6. Step 6: Final answer
    x = 15,157.24

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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.