Home / 13,075.47-18,038.62-7,769.26

Finding the Fourth Proportional to 13,075.47, 18,038.62 and 7,769.26

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Solution

The fourth proportional to 13,075.47, 18,038.62 and 7,769.26 is: 10,718.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,075.47 : 18,038.62 = 7,769.26 : x
  2. Step 2: Convert to fraction form
    13,075.47/18,038.62 = 7,769.26/x
  3. Step 3: Cross multiply
    13,075.47x = 18,038.62 × 7,769.26
  4. Step 4: Simplify right side
    13,075.47x = 140,146,664.30
  5. Step 5: Solve for x
    x = 140,146,664.30/13,075.47
  6. Step 6: Final answer
    x = 10,718.29

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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.