Home / 13,055.80-18,017.01-7,087.47

Finding the Fourth Proportional to 13,055.80, 18,017.01 and 7,087.47

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Solution

The fourth proportional to 13,055.80, 18,017.01 and 7,087.47 is: 9,780.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.80 : 18,017.01 = 7,087.47 : x
  2. Step 2: Convert to fraction form
    13,055.80/18,017.01 = 7,087.47/x
  3. Step 3: Cross multiply
    13,055.80x = 18,017.01 × 7,087.47
  4. Step 4: Simplify right side
    13,055.80x = 127,695,017.86
  5. Step 5: Solve for x
    x = 127,695,017.86/13,055.80
  6. Step 6: Final answer
    x = 9,780.71

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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.