Home / 28,271,655.72-42,409,631.70-10,992,432.78

Finding the Fourth Proportional to 28,271,655.72, 42,409,631.70 and 10,992,432.78

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Solution

The fourth proportional to 28,271,655.72, 42,409,631.70 and 10,992,432.78 is: 16,489,484.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271,655.72 : 42,409,631.70 = 10,992,432.78 : x
  2. Step 2: Convert to fraction form
    28,271,655.72/42,409,631.70 = 10,992,432.78/x
  3. Step 3: Cross multiply
    28,271,655.72x = 42,409,631.70 × 10,992,432.78
  4. Step 4: Simplify right side
    28,271,655.72x = 466,185,025,686,807.12
  5. Step 5: Solve for x
    x = 466,185,025,686,807.12/28,271,655.72
  6. Step 6: Final answer
    x = 16,489,484.39

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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.