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Finding the Fourth Proportional to 15,551.19, 21,460.47 and 8,477.46

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Solution

The fourth proportional to 15,551.19, 21,460.47 and 8,477.46 is: 11,698.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.19 : 21,460.47 = 8,477.46 : x
  2. Step 2: Convert to fraction form
    15,551.19/21,460.47 = 8,477.46/x
  3. Step 3: Cross multiply
    15,551.19x = 21,460.47 × 8,477.46
  4. Step 4: Simplify right side
    15,551.19x = 181,930,276.01
  5. Step 5: Solve for x
    x = 181,930,276.01/15,551.19
  6. Step 6: Final answer
    x = 11,698.80

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Double scale
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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.