Home / 21,470,946.40-32,181,536.40-8,685,128.80

Finding the Fourth Proportional to 21,470,946.40, 32,181,536.40 and 8,685,128.80

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Solution

The fourth proportional to 21,470,946.40, 32,181,536.40 and 8,685,128.80 is: 13,017,627.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470,946.40 : 32,181,536.40 = 8,685,128.80 : x
  2. Step 2: Convert to fraction form
    21,470,946.40/32,181,536.40 = 8,685,128.80/x
  3. Step 3: Cross multiply
    21,470,946.40x = 32,181,536.40 × 8,685,128.80
  4. Step 4: Simplify right side
    21,470,946.40x = 279,500,788,615,888.34
  5. Step 5: Solve for x
    x = 279,500,788,615,888.34/21,470,946.40
  6. Step 6: Final answer
    x = 13,017,627.79

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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.