Home / 13,388.34-18,475.08-7,864.68

Finding the Fourth Proportional to 13,388.34, 18,475.08 and 7,864.68

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Solution

The fourth proportional to 13,388.34, 18,475.08 and 7,864.68 is: 10,852.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.34 : 18,475.08 = 7,864.68 : x
  2. Step 2: Convert to fraction form
    13,388.34/18,475.08 = 7,864.68/x
  3. Step 3: Cross multiply
    13,388.34x = 18,475.08 × 7,864.68
  4. Step 4: Simplify right side
    13,388.34x = 145,300,592.17
  5. Step 5: Solve for x
    x = 145,300,592.17/13,388.34
  6. Step 6: Final answer
    x = 10,852.77

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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.