Home / 21,291,208.20-31,900,070.70-9,908,310.60

Finding the Fourth Proportional to 21,291,208.20, 31,900,070.70 and 9,908,310.60

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Solution

The fourth proportional to 21,291,208.20, 31,900,070.70 and 9,908,310.60 is: 14,845,367.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291,208.20 : 31,900,070.70 = 9,908,310.60 : x
  2. Step 2: Convert to fraction form
    21,291,208.20/31,900,070.70 = 9,908,310.60/x
  3. Step 3: Cross multiply
    21,291,208.20x = 31,900,070.70 × 9,908,310.60
  4. Step 4: Simplify right side
    21,291,208.20x = 316,075,808,657,559.38
  5. Step 5: Solve for x
    x = 316,075,808,657,559.38/21,291,208.20
  6. Step 6: Final answer
    x = 14,845,367.43

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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.