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Finding the Fourth Proportional to 15,637.84, 21,581.76 and 8,924.48

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Solution

The fourth proportional to 15,637.84, 21,581.76 and 8,924.48 is: 12,316.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,637.84 : 21,581.76 = 8,924.48 : x
  2. Step 2: Convert to fraction form
    15,637.84/21,581.76 = 8,924.48/x
  3. Step 3: Cross multiply
    15,637.84x = 21,581.76 × 8,924.48
  4. Step 4: Simplify right side
    15,637.84x = 192,605,855.26
  5. Step 5: Solve for x
    x = 192,605,855.26/15,637.84
  6. Step 6: Final answer
    x = 12,316.65

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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.