Home / 12,449,509.80-18,674,264.70-7,398,220.20

Finding the Fourth Proportional to 12,449,509.80, 18,674,264.70 and 7,398,220.20

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Solution

The fourth proportional to 12,449,509.80, 18,674,264.70 and 7,398,220.20 is: 11,097,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,449,509.80 : 18,674,264.70 = 7,398,220.20 : x
  2. Step 2: Convert to fraction form
    12,449,509.80/18,674,264.70 = 7,398,220.20/x
  3. Step 3: Cross multiply
    12,449,509.80x = 18,674,264.70 × 7,398,220.20
  4. Step 4: Simplify right side
    12,449,509.80x = 138,156,322,323,686.94
  5. Step 5: Solve for x
    x = 138,156,322,323,686.94/12,449,509.80
  6. Step 6: Final answer
    x = 11,097,330.30

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1.5x scale

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.