Home / 18,828.81-28,245.57-5,681.16

Finding the Fourth Proportional to 18,828.81, 28,245.57 and 5,681.16

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Solution

The fourth proportional to 18,828.81, 28,245.57 and 5,681.16 is: 8,522.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.81 : 28,245.57 = 5,681.16 : x
  2. Step 2: Convert to fraction form
    18,828.81/28,245.57 = 5,681.16/x
  3. Step 3: Cross multiply
    18,828.81x = 28,245.57 × 5,681.16
  4. Step 4: Simplify right side
    18,828.81x = 160,467,602.46
  5. Step 5: Solve for x
    x = 160,467,602.46/18,828.81
  6. Step 6: Final answer
    x = 8,522.45

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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.