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Finding the Fourth Proportional to 15,576.95, 21,495.97 and 8,502.95

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Solution

The fourth proportional to 15,576.95, 21,495.97 and 8,502.95 is: 11,733.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,576.95 : 21,495.97 = 8,502.95 : x
  2. Step 2: Convert to fraction form
    15,576.95/21,495.97 = 8,502.95/x
  3. Step 3: Cross multiply
    15,576.95x = 21,495.97 × 8,502.95
  4. Step 4: Simplify right side
    15,576.95x = 182,779,158.11
  5. Step 5: Solve for x
    x = 182,779,158.11/15,576.95
  6. Step 6: Final answer
    x = 11,733.95

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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.