Home / 13,053.53-18,013.88-7,085.20

Finding the Fourth Proportional to 13,053.53, 18,013.88 and 7,085.20

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Solution

The fourth proportional to 13,053.53, 18,013.88 and 7,085.20 is: 9,777.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.53 : 18,013.88 = 7,085.20 : x
  2. Step 2: Convert to fraction form
    13,053.53/18,013.88 = 7,085.20/x
  3. Step 3: Cross multiply
    13,053.53x = 18,013.88 × 7,085.20
  4. Step 4: Simplify right side
    13,053.53x = 127,631,942.58
  5. Step 5: Solve for x
    x = 127,631,942.58/13,053.53
  6. Step 6: Final answer
    x = 9,777.58

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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.