Home / 15,551.34-21,460.74-8,478.06

Finding the Fourth Proportional to 15,551.34, 21,460.74 and 8,478.06

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Solution

The fourth proportional to 15,551.34, 21,460.74 and 8,478.06 is: 11,699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.34 : 21,460.74 = 8,478.06 : x
  2. Step 2: Convert to fraction form
    15,551.34/21,460.74 = 8,478.06/x
  3. Step 3: Cross multiply
    15,551.34x = 21,460.74 × 8,478.06
  4. Step 4: Simplify right side
    15,551.34x = 181,945,441.36
  5. Step 5: Solve for x
    x = 181,945,441.36/15,551.34
  6. Step 6: Final answer
    x = 11,699.66

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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.