Home / 13,908.75-20,861.38-4,547.98

Finding the Fourth Proportional to 13,908.75, 20,861.38 and 4,547.98

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Solution

The fourth proportional to 13,908.75, 20,861.38 and 4,547.98 is: 6,821.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.75 : 20,861.38 = 4,547.98 : x
  2. Step 2: Convert to fraction form
    13,908.75/20,861.38 = 4,547.98/x
  3. Step 3: Cross multiply
    13,908.75x = 20,861.38 × 4,547.98
  4. Step 4: Simplify right side
    13,908.75x = 94,877,170.77
  5. Step 5: Solve for x
    x = 94,877,170.77/13,908.75
  6. Step 6: Final answer
    x = 6,821.40

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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.