Home / 21,138,397,602.80-31,686,652,424.94-9,926,200,838.12

Finding the Fourth Proportional to 21,138,397,602.80, 31,686,652,424.94 and 9,926,200,838.12

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Solution

The fourth proportional to 21,138,397,602.80, 31,686,652,424.94 and 9,926,200,838.12 is: 14,879,466,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138,397,602.80 : 31,686,652,424.94 = 9,926,200,838.12 : x
  2. Step 2: Convert to fraction form
    21,138,397,602.80/31,686,652,424.94 = 9,926,200,838.12/x
  3. Step 3: Cross multiply
    21,138,397,602.80x = 31,686,652,424.94 × 9,926,200,838.12
  4. Step 4: Simplify right side
    21,138,397,602.80x = 314,528,075,857,656,545,280
  5. Step 5: Solve for x
    x = 314,528,075,857,656,545,280/21,138,397,602.80
  6. Step 6: Final answer
    x = 14,879,466,351.60

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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.