Home / 12,388.48-17,088.96-7,417.60

Finding the Fourth Proportional to 12,388.48, 17,088.96 and 7,417.60

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Solution

The fourth proportional to 12,388.48, 17,088.96 and 7,417.60 is: 10,232.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.48 : 17,088.96 = 7,417.60 : x
  2. Step 2: Convert to fraction form
    12,388.48/17,088.96 = 7,417.60/x
  3. Step 3: Cross multiply
    12,388.48x = 17,088.96 × 7,417.60
  4. Step 4: Simplify right side
    12,388.48x = 126,759,069.70
  5. Step 5: Solve for x
    x = 126,759,069.70/12,388.48
  6. Step 6: Final answer
    x = 10,232.01

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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.