Home / 15,403.64-21,256.96-8,330.06

Finding the Fourth Proportional to 15,403.64, 21,256.96 and 8,330.06

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Solution

The fourth proportional to 15,403.64, 21,256.96 and 8,330.06 is: 11,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,403.64 : 21,256.96 = 8,330.06 : x
  2. Step 2: Convert to fraction form
    15,403.64/21,256.96 = 8,330.06/x
  3. Step 3: Cross multiply
    15,403.64x = 21,256.96 × 8,330.06
  4. Step 4: Simplify right side
    15,403.64x = 177,071,752.22
  5. Step 5: Solve for x
    x = 177,071,752.22/15,403.64
  6. Step 6: Final answer
    x = 11,495.45

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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.