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Finding the Fourth Proportional to 18,686,969.40, 28,030,454.10 and 18,686,969.40

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Solution

The fourth proportional to 18,686,969.40, 28,030,454.10 and 18,686,969.40 is: 28,030,454.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,969.40 : 28,030,454.10 = 18,686,969.40 : x
  2. Step 2: Convert to fraction form
    18,686,969.40/28,030,454.10 = 18,686,969.40/x
  3. Step 3: Cross multiply
    18,686,969.40x = 28,030,454.10 × 18,686,969.40
  4. Step 4: Simplify right side
    18,686,969.40x = 523,804,238,034,804.50
  5. Step 5: Solve for x
    x = 523,804,238,034,804.50/18,686,969.40
  6. Step 6: Final answer
    x = 28,030,454.10

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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.