Home / 28,555,708.32-42,849,278.64-12,381,783.84

Finding the Fourth Proportional to 28,555,708.32, 42,849,278.64 and 12,381,783.84

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Solution

The fourth proportional to 28,555,708.32, 42,849,278.64 and 12,381,783.84 is: 18,579,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555,708.32 : 42,849,278.64 = 12,381,783.84 : x
  2. Step 2: Convert to fraction form
    28,555,708.32/42,849,278.64 = 12,381,783.84/x
  3. Step 3: Cross multiply
    28,555,708.32x = 42,849,278.64 × 12,381,783.84
  4. Step 4: Simplify right side
    28,555,708.32x = 530,550,505,820,409.19
  5. Step 5: Solve for x
    x = 530,550,505,820,409.19/28,555,708.32
  6. Step 6: Final answer
    x = 18,579,490.30

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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.