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Finding the Fourth Proportional to 21,757.69, 30,030.93 and 14,607.74

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Solution

The fourth proportional to 21,757.69, 30,030.93 and 14,607.74 is: 20,162.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,757.69 : 30,030.93 = 14,607.74 : x
  2. Step 2: Convert to fraction form
    21,757.69/30,030.93 = 14,607.74/x
  3. Step 3: Cross multiply
    21,757.69x = 30,030.93 × 14,607.74
  4. Step 4: Simplify right side
    21,757.69x = 438,683,861.35
  5. Step 5: Solve for x
    x = 438,683,861.35/21,757.69
  6. Step 6: Final answer
    x = 20,162.25

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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.