Home / 28,012,912.40-42,019,368.60-19,793,291.60

Finding the Fourth Proportional to 28,012,912.40, 42,019,368.60 and 19,793,291.60

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Solution

The fourth proportional to 28,012,912.40, 42,019,368.60 and 19,793,291.60 is: 29,689,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012,912.40 : 42,019,368.60 = 19,793,291.60 : x
  2. Step 2: Convert to fraction form
    28,012,912.40/42,019,368.60 = 19,793,291.60/x
  3. Step 3: Cross multiply
    28,012,912.40x = 42,019,368.60 × 19,793,291.60
  4. Step 4: Simplify right side
    28,012,912.40x = 831,701,615,547,683.88
  5. Step 5: Solve for x
    x = 831,701,615,547,683.88/28,012,912.40
  6. Step 6: Final answer
    x = 29,689,937.40

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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.