Home / 21,091,124.55-31,607,955.80-12,896,636.48

Finding the Fourth Proportional to 21,091,124.55, 31,607,955.80 and 12,896,636.48

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Solution

The fourth proportional to 21,091,124.55, 31,607,955.80 and 12,896,636.48 is: 19,327,386.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091,124.55 : 31,607,955.80 = 12,896,636.48 : x
  2. Step 2: Convert to fraction form
    21,091,124.55/31,607,955.80 = 12,896,636.48/x
  3. Step 3: Cross multiply
    21,091,124.55x = 31,607,955.80 × 12,896,636.48
  4. Step 4: Simplify right side
    21,091,124.55x = 407,636,315,986,949.81
  5. Step 5: Solve for x
    x = 407,636,315,986,949.81/21,091,124.55
  6. Step 6: Final answer
    x = 19,327,386.50

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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.