Home / 21,919,857.32-30,249,461.75-12,130,976.54

Finding the Fourth Proportional to 21,919,857.32, 30,249,461.75 and 12,130,976.54

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Solution

The fourth proportional to 21,919,857.32, 30,249,461.75 and 12,130,976.54 is: 16,740,780.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919,857.32 : 30,249,461.75 = 12,130,976.54 : x
  2. Step 2: Convert to fraction form
    21,919,857.32/30,249,461.75 = 12,130,976.54/x
  3. Step 3: Cross multiply
    21,919,857.32x = 30,249,461.75 × 12,130,976.54
  4. Step 4: Simplify right side
    21,919,857.32x = 366,955,510,851,846.12
  5. Step 5: Solve for x
    x = 366,955,510,851,846.12/21,919,857.32
  6. Step 6: Final answer
    x = 16,740,780.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.