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Finding the Fourth Proportional to 21,574.63, 32,365.64 and 9,888.85

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Solution

The fourth proportional to 21,574.63, 32,365.64 and 9,888.85 is: 14,834.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,574.63 : 32,365.64 = 9,888.85 : x
  2. Step 2: Convert to fraction form
    21,574.63/32,365.64 = 9,888.85/x
  3. Step 3: Cross multiply
    21,574.63x = 32,365.64 × 9,888.85
  4. Step 4: Simplify right side
    21,574.63x = 320,058,959.11
  5. Step 5: Solve for x
    x = 320,058,959.11/21,574.63
  6. Step 6: Final answer
    x = 14,834.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.