Home / 12,884,128.40-19,328,525.40-6,478,259.60

Finding the Fourth Proportional to 12,884,128.40, 19,328,525.40 and 6,478,259.60

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Solution

The fourth proportional to 12,884,128.40, 19,328,525.40 and 6,478,259.60 is: 9,718,562.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,884,128.40 : 19,328,525.40 = 6,478,259.60 : x
  2. Step 2: Convert to fraction form
    12,884,128.40/19,328,525.40 = 6,478,259.60/x
  3. Step 3: Cross multiply
    12,884,128.40x = 19,328,525.40 × 6,478,259.60
  4. Step 4: Simplify right side
    12,884,128.40x = 125,215,205,226,393.83
  5. Step 5: Solve for x
    x = 125,215,205,226,393.83/12,884,128.40
  6. Step 6: Final answer
    x = 9,718,562.35

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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.