Home / 14,215.64-21,295.74-8,655.19

Finding the Fourth Proportional to 14,215.64, 21,295.74 and 8,655.19

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Solution

The fourth proportional to 14,215.64, 21,295.74 and 8,655.19 is: 12,965.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,215.64 : 21,295.74 = 8,655.19 : x
  2. Step 2: Convert to fraction form
    14,215.64/21,295.74 = 8,655.19/x
  3. Step 3: Cross multiply
    14,215.64x = 21,295.74 × 8,655.19
  4. Step 4: Simplify right side
    14,215.64x = 184,318,675.89
  5. Step 5: Solve for x
    x = 184,318,675.89/14,215.64
  6. Step 6: Final answer
    x = 12,965.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.