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Finding the Fourth Proportional to 21,254.68, 29,330.94 and 12,300.94

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Solution

The fourth proportional to 21,254.68, 29,330.94 and 12,300.94 is: 16,975.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.68 : 29,330.94 = 12,300.94 : x
  2. Step 2: Convert to fraction form
    21,254.68/29,330.94 = 12,300.94/x
  3. Step 3: Cross multiply
    21,254.68x = 29,330.94 × 12,300.94
  4. Step 4: Simplify right side
    21,254.68x = 360,798,133.08
  5. Step 5: Solve for x
    x = 360,798,133.08/21,254.68
  6. Step 6: Final answer
    x = 16,975.00

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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.