Home / 15,403.63-21,257.01-8,330.05

Finding the Fourth Proportional to 15,403.63, 21,257.01 and 8,330.05

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Solution

The fourth proportional to 15,403.63, 21,257.01 and 8,330.05 is: 11,495.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,403.63 : 21,257.01 = 8,330.05 : x
  2. Step 2: Convert to fraction form
    15,403.63/21,257.01 = 8,330.05/x
  3. Step 3: Cross multiply
    15,403.63x = 21,257.01 × 8,330.05
  4. Step 4: Simplify right side
    15,403.63x = 177,071,956.15
  5. Step 5: Solve for x
    x = 177,071,956.15/15,403.63
  6. Step 6: Final answer
    x = 11,495.47

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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.