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Finding the Fourth Proportional to 15,526.60, 21,427.08 and 8,453.08

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Solution

The fourth proportional to 15,526.60, 21,427.08 and 8,453.08 is: 11,665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,526.60 : 21,427.08 = 8,453.08 : x
  2. Step 2: Convert to fraction form
    15,526.60/21,427.08 = 8,453.08/x
  3. Step 3: Cross multiply
    15,526.60x = 21,427.08 × 8,453.08
  4. Step 4: Simplify right side
    15,526.60x = 181,124,821.41
  5. Step 5: Solve for x
    x = 181,124,821.41/15,526.60
  6. Step 6: Final answer
    x = 11,665.45

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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.