Home / 21,153,804.32-31,730,716.98-13,963,657.76

Finding the Fourth Proportional to 21,153,804.32, 31,730,716.98 and 13,963,657.76

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Solution

The fourth proportional to 21,153,804.32, 31,730,716.98 and 13,963,657.76 is: 20,945,493.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153,804.32 : 31,730,716.98 = 13,963,657.76 : x
  2. Step 2: Convert to fraction form
    21,153,804.32/31,730,716.98 = 13,963,657.76/x
  3. Step 3: Cross multiply
    21,153,804.32x = 31,730,716.98 × 13,963,657.76
  4. Step 4: Simplify right side
    21,153,804.32x = 443,076,872,388,140.75
  5. Step 5: Solve for x
    x = 443,076,872,388,140.75/21,153,804.32
  6. Step 6: Final answer
    x = 20,945,493.57

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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.