Home / 47,927.20-71,890.80-12,870.40

Finding the Fourth Proportional to 47,927.20, 71,890.80 and 12,870.40

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Solution

The fourth proportional to 47,927.20, 71,890.80 and 12,870.40 is: 19,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,927.20 : 71,890.80 = 12,870.40 : x
  2. Step 2: Convert to fraction form
    47,927.20/71,890.80 = 12,870.40/x
  3. Step 3: Cross multiply
    47,927.20x = 71,890.80 × 12,870.40
  4. Step 4: Simplify right side
    47,927.20x = 925,263,352.32
  5. Step 5: Solve for x
    x = 925,263,352.32/47,927.20
  6. Step 6: Final answer
    x = 19,305.60

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1.5x scale

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.