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Finding the Fourth Proportional to 12,985,210.80, 19,477,816.20 and 6,252,001.20

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Solution

The fourth proportional to 12,985,210.80, 19,477,816.20 and 6,252,001.20 is: 9,378,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985,210.80 : 19,477,816.20 = 6,252,001.20 : x
  2. Step 2: Convert to fraction form
    12,985,210.80/19,477,816.20 = 6,252,001.20/x
  3. Step 3: Cross multiply
    12,985,210.80x = 19,477,816.20 × 6,252,001.20
  4. Step 4: Simplify right side
    12,985,210.80x = 121,775,330,255,779.44
  5. Step 5: Solve for x
    x = 121,775,330,255,779.44/12,985,210.80
  6. Step 6: Final answer
    x = 9,378,001.80

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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.