Home / 13,534.79-18,678.42-7,566.71

Finding the Fourth Proportional to 13,534.79, 18,678.42 and 7,566.71

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Solution

The fourth proportional to 13,534.79, 18,678.42 and 7,566.71 is: 10,442.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,534.79 : 18,678.42 = 7,566.71 : x
  2. Step 2: Convert to fraction form
    13,534.79/18,678.42 = 7,566.71/x
  3. Step 3: Cross multiply
    13,534.79x = 18,678.42 × 7,566.71
  4. Step 4: Simplify right side
    13,534.79x = 141,334,094.01
  5. Step 5: Solve for x
    x = 141,334,094.01/13,534.79
  6. Step 6: Final answer
    x = 10,442.29

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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.