Home / 12,920,922.53-17,830,069.67-7,119,379.61

Finding the Fourth Proportional to 12,920,922.53, 17,830,069.67 and 7,119,379.61

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Solution

The fourth proportional to 12,920,922.53, 17,830,069.67 and 7,119,379.61 is: 9,824,301.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,922.53 : 17,830,069.67 = 7,119,379.61 : x
  2. Step 2: Convert to fraction form
    12,920,922.53/17,830,069.67 = 7,119,379.61/x
  3. Step 3: Cross multiply
    12,920,922.53x = 17,830,069.67 × 7,119,379.61
  4. Step 4: Simplify right side
    12,920,922.53x = 126,939,034,453,477.45
  5. Step 5: Solve for x
    x = 126,939,034,453,477.45/12,920,922.53
  6. Step 6: Final answer
    x = 9,824,301.18

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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.