Home / 13,147.04-18,143.16-7,178.93

Finding the Fourth Proportional to 13,147.04, 18,143.16 and 7,178.93

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Solution

The fourth proportional to 13,147.04, 18,143.16 and 7,178.93 is: 9,907.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.04 : 18,143.16 = 7,178.93 : x
  2. Step 2: Convert to fraction form
    13,147.04/18,143.16 = 7,178.93/x
  3. Step 3: Cross multiply
    13,147.04x = 18,143.16 × 7,178.93
  4. Step 4: Simplify right side
    13,147.04x = 130,248,426.02
  5. Step 5: Solve for x
    x = 130,248,426.02/13,147.04
  6. Step 6: Final answer
    x = 9,907.05

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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.