Home / 15,376.16-21,221.12-9,004.68

Finding the Fourth Proportional to 15,376.16, 21,221.12 and 9,004.68

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Solution

The fourth proportional to 15,376.16, 21,221.12 and 9,004.68 is: 12,427.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,376.16 : 21,221.12 = 9,004.68 : x
  2. Step 2: Convert to fraction form
    15,376.16/21,221.12 = 9,004.68/x
  3. Step 3: Cross multiply
    15,376.16x = 21,221.12 × 9,004.68
  4. Step 4: Simplify right side
    15,376.16x = 191,089,394.84
  5. Step 5: Solve for x
    x = 191,089,394.84/15,376.16
  6. Step 6: Final answer
    x = 12,427.64

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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.