Home / 13,097.90-18,075.22-7,129.62

Finding the Fourth Proportional to 13,097.90, 18,075.22 and 7,129.62

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Solution

The fourth proportional to 13,097.90, 18,075.22 and 7,129.62 is: 9,838.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,097.90 : 18,075.22 = 7,129.62 : x
  2. Step 2: Convert to fraction form
    13,097.90/18,075.22 = 7,129.62/x
  3. Step 3: Cross multiply
    13,097.90x = 18,075.22 × 7,129.62
  4. Step 4: Simplify right side
    13,097.90x = 128,869,432.19
  5. Step 5: Solve for x
    x = 128,869,432.19/13,097.90
  6. Step 6: Final answer
    x = 9,838.94

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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.