Home / 21,854.03-30,157.80-12,294.08

Finding the Fourth Proportional to 21,854.03, 30,157.80 and 12,294.08

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Solution

The fourth proportional to 21,854.03, 30,157.80 and 12,294.08 is: 16,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,854.03 : 30,157.80 = 12,294.08 : x
  2. Step 2: Convert to fraction form
    21,854.03/30,157.80 = 12,294.08/x
  3. Step 3: Cross multiply
    21,854.03x = 30,157.80 × 12,294.08
  4. Step 4: Simplify right side
    21,854.03x = 370,762,255.04
  5. Step 5: Solve for x
    x = 370,762,255.04/21,854.03
  6. Step 6: Final answer
    x = 16,965.40

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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.