Home / 21,129,117.21-31,684,446.63-7,477,726.50

Finding the Fourth Proportional to 21,129,117.21, 31,684,446.63 and 7,477,726.50

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Solution

The fourth proportional to 21,129,117.21, 31,684,446.63 and 7,477,726.50 is: 11,213,323.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,129,117.21 : 31,684,446.63 = 7,477,726.50 : x
  2. Step 2: Convert to fraction form
    21,129,117.21/31,684,446.63 = 7,477,726.50/x
  3. Step 3: Cross multiply
    21,129,117.21x = 31,684,446.63 × 7,477,726.50
  4. Step 4: Simplify right side
    21,129,117.21x = 236,927,626,202,986.69
  5. Step 5: Solve for x
    x = 236,927,626,202,986.69/21,129,117.21
  6. Step 6: Final answer
    x = 11,213,323.48

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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.