Home / 15,457.04-21,330.60-8,383.40

Finding the Fourth Proportional to 15,457.04, 21,330.60 and 8,383.40

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Solution

The fourth proportional to 15,457.04, 21,330.60 and 8,383.40 is: 11,569.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.04 : 21,330.60 = 8,383.40 : x
  2. Step 2: Convert to fraction form
    15,457.04/21,330.60 = 8,383.40/x
  3. Step 3: Cross multiply
    15,457.04x = 21,330.60 × 8,383.40
  4. Step 4: Simplify right side
    15,457.04x = 178,822,952.04
  5. Step 5: Solve for x
    x = 178,822,952.04/15,457.04
  6. Step 6: Final answer
    x = 11,569.03

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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.