Home / 12,412.40-17,128.92-6,823.28

Finding the Fourth Proportional to 12,412.40, 17,128.92 and 6,823.28

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Solution

The fourth proportional to 12,412.40, 17,128.92 and 6,823.28 is: 9,416.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,412.40 : 17,128.92 = 6,823.28 : x
  2. Step 2: Convert to fraction form
    12,412.40/17,128.92 = 6,823.28/x
  3. Step 3: Cross multiply
    12,412.40x = 17,128.92 × 6,823.28
  4. Step 4: Simplify right side
    12,412.40x = 116,875,417.26
  5. Step 5: Solve for x
    x = 116,875,417.26/12,412.40
  6. Step 6: Final answer
    x = 9,416.02

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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.