Home / 18,719,239.50-28,075,308.21-9,124,968.78

Finding the Fourth Proportional to 18,719,239.50, 28,075,308.21 and 9,124,968.78

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Solution

The fourth proportional to 18,719,239.50, 28,075,308.21 and 9,124,968.78 is: 13,685,722.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719,239.50 : 28,075,308.21 = 9,124,968.78 : x
  2. Step 2: Convert to fraction form
    18,719,239.50/28,075,308.21 = 9,124,968.78/x
  3. Step 3: Cross multiply
    18,719,239.50x = 28,075,308.21 × 9,124,968.78
  4. Step 4: Simplify right side
    18,719,239.50x = 256,186,310,905,127.69
  5. Step 5: Solve for x
    x = 256,186,310,905,127.69/18,719,239.50
  6. Step 6: Final answer
    x = 13,685,722.16

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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.