Home / 12,920,921.53-17,830,068.29-7,119,378.61

Finding the Fourth Proportional to 12,920,921.53, 17,830,068.29 and 7,119,378.61

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Solution

The fourth proportional to 12,920,921.53, 17,830,068.29 and 7,119,378.61 is: 9,824,299.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,921.53 : 17,830,068.29 = 7,119,378.61 : x
  2. Step 2: Convert to fraction form
    12,920,921.53/17,830,068.29 = 7,119,378.61/x
  3. Step 3: Cross multiply
    12,920,921.53x = 17,830,068.29 × 7,119,378.61
  4. Step 4: Simplify right side
    12,920,921.53x = 126,939,006,709,514.94
  5. Step 5: Solve for x
    x = 126,939,006,709,514.94/12,920,921.53
  6. Step 6: Final answer
    x = 9,824,299.80

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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.