Home / 13,098.27-18,075.67-7,129.91

Finding the Fourth Proportional to 13,098.27, 18,075.67 and 7,129.91

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Solution

The fourth proportional to 13,098.27, 18,075.67 and 7,129.91 is: 9,839.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,098.27 : 18,075.67 = 7,129.91 : x
  2. Step 2: Convert to fraction form
    13,098.27/18,075.67 = 7,129.91/x
  3. Step 3: Cross multiply
    13,098.27x = 18,075.67 × 7,129.91
  4. Step 4: Simplify right side
    13,098.27x = 128,877,927.65
  5. Step 5: Solve for x
    x = 128,877,927.65/13,098.27
  6. Step 6: Final answer
    x = 9,839.31

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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.