Home / 13,454.01-18,565.61-7,485.45

Finding the Fourth Proportional to 13,454.01, 18,565.61 and 7,485.45

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Solution

The fourth proportional to 13,454.01, 18,565.61 and 7,485.45 is: 10,329.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,454.01 : 18,565.61 = 7,485.45 : x
  2. Step 2: Convert to fraction form
    13,454.01/18,565.61 = 7,485.45/x
  3. Step 3: Cross multiply
    13,454.01x = 18,565.61 × 7,485.45
  4. Step 4: Simplify right side
    13,454.01x = 138,971,907.95
  5. Step 5: Solve for x
    x = 138,971,907.95/13,454.01
  6. Step 6: Final answer
    x = 10,329.41

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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.