Home / 21,049,385.50-31,574,075.46-7,921,271.08

Finding the Fourth Proportional to 21,049,385.50, 31,574,075.46 and 7,921,271.08

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Solution

The fourth proportional to 21,049,385.50, 31,574,075.46 and 7,921,271.08 is: 11,881,905.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049,385.50 : 31,574,075.46 = 7,921,271.08 : x
  2. Step 2: Convert to fraction form
    21,049,385.50/31,574,075.46 = 7,921,271.08/x
  3. Step 3: Cross multiply
    21,049,385.50x = 31,574,075.46 × 7,921,271.08
  4. Step 4: Simplify right side
    21,049,385.50x = 250,106,810,819,035.72
  5. Step 5: Solve for x
    x = 250,106,810,819,035.72/21,049,385.50
  6. Step 6: Final answer
    x = 11,881,905.57

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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.