Home / 12,289,915.12-16,955,352.60-7,698,242.80

Finding the Fourth Proportional to 12,289,915.12, 16,955,352.60 and 7,698,242.80

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Solution

The fourth proportional to 12,289,915.12, 16,955,352.60 and 7,698,242.80 is: 10,620,612.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289,915.12 : 16,955,352.60 = 7,698,242.80 : x
  2. Step 2: Convert to fraction form
    12,289,915.12/16,955,352.60 = 7,698,242.80/x
  3. Step 3: Cross multiply
    12,289,915.12x = 16,955,352.60 × 7,698,242.80
  4. Step 4: Simplify right side
    12,289,915.12x = 130,526,421,074,411.28
  5. Step 5: Solve for x
    x = 130,526,421,074,411.28/12,289,915.12
  6. Step 6: Final answer
    x = 10,620,612.09

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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.