Home / 15,457.52-21,331.32-8,383.52

Finding the Fourth Proportional to 15,457.52, 21,331.32 and 8,383.52

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Solution

The fourth proportional to 15,457.52, 21,331.32 and 8,383.52 is: 11,569.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.52 : 21,331.32 = 8,383.52 : x
  2. Step 2: Convert to fraction form
    15,457.52/21,331.32 = 8,383.52/x
  3. Step 3: Cross multiply
    15,457.52x = 21,331.32 × 8,383.52
  4. Step 4: Simplify right side
    15,457.52x = 178,831,547.85
  5. Step 5: Solve for x
    x = 178,831,547.85/15,457.52
  6. Step 6: Final answer
    x = 11,569.23

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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.