Home / 12,303,075.20-18,454,612.80-5,128,621.70

Finding the Fourth Proportional to 12,303,075.20, 18,454,612.80 and 5,128,621.70

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Solution

The fourth proportional to 12,303,075.20, 18,454,612.80 and 5,128,621.70 is: 7,692,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303,075.20 : 18,454,612.80 = 5,128,621.70 : x
  2. Step 2: Convert to fraction form
    12,303,075.20/18,454,612.80 = 5,128,621.70/x
  3. Step 3: Cross multiply
    12,303,075.20x = 18,454,612.80 × 5,128,621.70
  4. Step 4: Simplify right side
    12,303,075.20x = 94,646,727,671,177.77
  5. Step 5: Solve for x
    x = 94,646,727,671,177.77/12,303,075.20
  6. Step 6: Final answer
    x = 7,692,932.55

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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.