Home / 18,988.07-28,466.73-7,903.05

Finding the Fourth Proportional to 18,988.07, 28,466.73 and 7,903.05

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Solution

The fourth proportional to 18,988.07, 28,466.73 and 7,903.05 is: 11,848.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.07 : 28,466.73 = 7,903.05 : x
  2. Step 2: Convert to fraction form
    18,988.07/28,466.73 = 7,903.05/x
  3. Step 3: Cross multiply
    18,988.07x = 28,466.73 × 7,903.05
  4. Step 4: Simplify right side
    18,988.07x = 224,973,990.53
  5. Step 5: Solve for x
    x = 224,973,990.53/18,988.07
  6. Step 6: Final answer
    x = 11,848.18

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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.