Home / 21,965.72-30,314.86-12,535.70

Finding the Fourth Proportional to 21,965.72, 30,314.86 and 12,535.70

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Solution

The fourth proportional to 21,965.72, 30,314.86 and 12,535.70 is: 17,300.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.72 : 30,314.86 = 12,535.70 : x
  2. Step 2: Convert to fraction form
    21,965.72/30,314.86 = 12,535.70/x
  3. Step 3: Cross multiply
    21,965.72x = 30,314.86 × 12,535.70
  4. Step 4: Simplify right side
    21,965.72x = 380,017,807.59
  5. Step 5: Solve for x
    x = 380,017,807.59/21,965.72
  6. Step 6: Final answer
    x = 17,300.50

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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.