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Finding the Fourth Proportional to 15,261.30, 21,059.97 and 8,547.30

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Solution

The fourth proportional to 15,261.30, 21,059.97 and 8,547.30 is: 11,794.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,261.30 : 21,059.97 = 8,547.30 : x
  2. Step 2: Convert to fraction form
    15,261.30/21,059.97 = 8,547.30/x
  3. Step 3: Cross multiply
    15,261.30x = 21,059.97 × 8,547.30
  4. Step 4: Simplify right side
    15,261.30x = 180,005,881.58
  5. Step 5: Solve for x
    x = 180,005,881.58/15,261.30
  6. Step 6: Final answer
    x = 11,794.92

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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.