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Finding the Fourth Proportional to 14,148.81, 21,356.19 and 14,148.81

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Solution

The fourth proportional to 14,148.81, 21,356.19 and 14,148.81 is: 21,356.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,148.81 : 21,356.19 = 14,148.81 : x
  2. Step 2: Convert to fraction form
    14,148.81/21,356.19 = 14,148.81/x
  3. Step 3: Cross multiply
    14,148.81x = 21,356.19 × 14,148.81
  4. Step 4: Simplify right side
    14,148.81x = 302,164,674.63
  5. Step 5: Solve for x
    x = 302,164,674.63/14,148.81
  6. Step 6: Final answer
    x = 21,356.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.