Home / 21,700.36-29,947.08-12,270.34

Finding the Fourth Proportional to 21,700.36, 29,947.08 and 12,270.34

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Solution

The fourth proportional to 21,700.36, 29,947.08 and 12,270.34 is: 16,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,700.36 : 29,947.08 = 12,270.34 : x
  2. Step 2: Convert to fraction form
    21,700.36/29,947.08 = 12,270.34/x
  3. Step 3: Cross multiply
    21,700.36x = 29,947.08 × 12,270.34
  4. Step 4: Simplify right side
    21,700.36x = 367,460,853.61
  5. Step 5: Solve for x
    x = 367,460,853.61/21,700.36
  6. Step 6: Final answer
    x = 16,933.40

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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.