Home / 12,289,921.12-16,955,360.88-7,698,248.80

Finding the Fourth Proportional to 12,289,921.12, 16,955,360.88 and 7,698,248.80

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Solution

The fourth proportional to 12,289,921.12, 16,955,360.88 and 7,698,248.80 is: 10,620,620.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289,921.12 : 16,955,360.88 = 7,698,248.80 : x
  2. Step 2: Convert to fraction form
    12,289,921.12/16,955,360.88 = 7,698,248.80/x
  3. Step 3: Cross multiply
    12,289,921.12x = 16,955,360.88 × 7,698,248.80
  4. Step 4: Simplify right side
    12,289,921.12x = 130,526,586,548,026.94
  5. Step 5: Solve for x
    x = 130,526,586,548,026.94/12,289,921.12
  6. Step 6: Final answer
    x = 10,620,620.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.