Home / 28,017,968.40-42,012,955.80-12,854,768.40

Finding the Fourth Proportional to 28,017,968.40, 42,012,955.80 and 12,854,768.40

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Solution

The fourth proportional to 28,017,968.40, 42,012,955.80 and 12,854,768.40 is: 19,275,730.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017,968.40 : 42,012,955.80 = 12,854,768.40 : x
  2. Step 2: Convert to fraction form
    28,017,968.40/42,012,955.80 = 12,854,768.40/x
  3. Step 3: Cross multiply
    28,017,968.40x = 42,012,955.80 × 12,854,768.40
  4. Step 4: Simplify right side
    28,017,968.40x = 540,066,816,608,436.69
  5. Step 5: Solve for x
    x = 540,066,816,608,436.69/28,017,968.40
  6. Step 6: Final answer
    x = 19,275,730.81

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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.