Home / 21,017,905.20-31,532,762.70-10,235,557.80

Finding the Fourth Proportional to 21,017,905.20, 31,532,762.70 and 10,235,557.80

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Solution

The fourth proportional to 21,017,905.20, 31,532,762.70 and 10,235,557.80 is: 15,356,212.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017,905.20 : 31,532,762.70 = 10,235,557.80 : x
  2. Step 2: Convert to fraction form
    21,017,905.20/31,532,762.70 = 10,235,557.80/x
  3. Step 3: Cross multiply
    21,017,905.20x = 31,532,762.70 × 10,235,557.80
  4. Step 4: Simplify right side
    21,017,905.20x = 322,755,415,209,534.06
  5. Step 5: Solve for x
    x = 322,755,415,209,534.06/21,017,905.20
  6. Step 6: Final answer
    x = 15,356,212.34

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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.