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Finding the Fourth Proportional to 15,602.31, 21,528.69 and 8,888.07

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Solution

The fourth proportional to 15,602.31, 21,528.69 and 8,888.07 is: 12,264.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,602.31 : 21,528.69 = 8,888.07 : x
  2. Step 2: Convert to fraction form
    15,602.31/21,528.69 = 8,888.07/x
  3. Step 3: Cross multiply
    15,602.31x = 21,528.69 × 8,888.07
  4. Step 4: Simplify right side
    15,602.31x = 191,348,503.73
  5. Step 5: Solve for x
    x = 191,348,503.73/15,602.31
  6. Step 6: Final answer
    x = 12,264.11

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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.