Home / 12,115,865.80-18,173,798.70-8,714,643.40

Finding the Fourth Proportional to 12,115,865.80, 18,173,798.70 and 8,714,643.40

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Solution

The fourth proportional to 12,115,865.80, 18,173,798.70 and 8,714,643.40 is: 13,071,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115,865.80 : 18,173,798.70 = 8,714,643.40 : x
  2. Step 2: Convert to fraction form
    12,115,865.80/18,173,798.70 = 8,714,643.40/x
  3. Step 3: Cross multiply
    12,115,865.80x = 18,173,798.70 × 8,714,643.40
  4. Step 4: Simplify right side
    12,115,865.80x = 158,378,174,893,883.59
  5. Step 5: Solve for x
    x = 158,378,174,893,883.59/12,115,865.80
  6. Step 6: Final answer
    x = 13,071,965.10

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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.