Home / 13,756.04-18,990.33-8,725.40

Finding the Fourth Proportional to 13,756.04, 18,990.33 and 8,725.40

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Solution

The fourth proportional to 13,756.04, 18,990.33 and 8,725.40 is: 12,045.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.04 : 18,990.33 = 8,725.40 : x
  2. Step 2: Convert to fraction form
    13,756.04/18,990.33 = 8,725.40/x
  3. Step 3: Cross multiply
    13,756.04x = 18,990.33 × 8,725.40
  4. Step 4: Simplify right side
    13,756.04x = 165,698,225.38
  5. Step 5: Solve for x
    x = 165,698,225.38/13,756.04
  6. Step 6: Final answer
    x = 12,045.49

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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.