Home / 18,938.49-28,405.23-6,458.01

Finding the Fourth Proportional to 18,938.49, 28,405.23 and 6,458.01

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Solution

The fourth proportional to 18,938.49, 28,405.23 and 6,458.01 is: 9,686.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.49 : 28,405.23 = 6,458.01 : x
  2. Step 2: Convert to fraction form
    18,938.49/28,405.23 = 6,458.01/x
  3. Step 3: Cross multiply
    18,938.49x = 28,405.23 × 6,458.01
  4. Step 4: Simplify right side
    18,938.49x = 183,441,259.39
  5. Step 5: Solve for x
    x = 183,441,259.39/18,938.49
  6. Step 6: Final answer
    x = 9,686.16

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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.