Home / 18,871,271,978.40-28,306,907,967.60-11,524,631,594.40

Finding the Fourth Proportional to 18,871,271,978.40, 28,306,907,967.60 and 11,524,631,594.40

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Solution

The fourth proportional to 18,871,271,978.40, 28,306,907,967.60 and 11,524,631,594.40 is: 17,286,947,391.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871,271,978.40 : 28,306,907,967.60 = 11,524,631,594.40 : x
  2. Step 2: Convert to fraction form
    18,871,271,978.40/28,306,907,967.60 = 11,524,631,594.40/x
  3. Step 3: Cross multiply
    18,871,271,978.40x = 28,306,907,967.60 × 11,524,631,594.40
  4. Step 4: Simplify right side
    18,871,271,978.40x = 326,226,685,903,176,007,680
  5. Step 5: Solve for x
    x = 326,226,685,903,176,007,680/18,871,271,978.40
  6. Step 6: Final answer
    x = 17,286,947,391.60

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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.