Home / 21,807,942-30,095,165.40-12,018,738.66

Finding the Fourth Proportional to 21,807,942, 30,095,165.40 and 12,018,738.66

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Solution

The fourth proportional to 21,807,942, 30,095,165.40 and 12,018,738.66 is: 16,585,972.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,807,942 : 30,095,165.40 = 12,018,738.66 : x
  2. Step 2: Convert to fraction form
    21,807,942/30,095,165.40 = 12,018,738.66/x
  3. Step 3: Cross multiply
    21,807,942x = 30,095,165.40 × 12,018,738.66
  4. Step 4: Simplify right side
    21,807,942x = 361,705,927,872,074.38
  5. Step 5: Solve for x
    x = 361,705,927,872,074.38/21,807,942
  6. Step 6: Final answer
    x = 16,585,972.57

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1.5x scale

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.