Home / 21,174,675.20-31,762,012.80-13,112,518.40

Finding the Fourth Proportional to 21,174,675.20, 31,762,012.80 and 13,112,518.40

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Solution

The fourth proportional to 21,174,675.20, 31,762,012.80 and 13,112,518.40 is: 19,668,777.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174,675.20 : 31,762,012.80 = 13,112,518.40 : x
  2. Step 2: Convert to fraction form
    21,174,675.20/31,762,012.80 = 13,112,518.40/x
  3. Step 3: Cross multiply
    21,174,675.20x = 31,762,012.80 × 13,112,518.40
  4. Step 4: Simplify right side
    21,174,675.20x = 416,479,977,261,035.56
  5. Step 5: Solve for x
    x = 416,479,977,261,035.56/21,174,675.20
  6. Step 6: Final answer
    x = 19,668,777.60

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1.5x scale

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.