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Finding the Fourth Proportional to 12,483,901.80, 18,725,852.70 and 8,701,655.40

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Solution

The fourth proportional to 12,483,901.80, 18,725,852.70 and 8,701,655.40 is: 13,052,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483,901.80 : 18,725,852.70 = 8,701,655.40 : x
  2. Step 2: Convert to fraction form
    12,483,901.80/18,725,852.70 = 8,701,655.40/x
  3. Step 3: Cross multiply
    12,483,901.80x = 18,725,852.70 × 8,701,655.40
  4. Step 4: Simplify right side
    12,483,901.80x = 162,945,917,266,559.59
  5. Step 5: Solve for x
    x = 162,945,917,266,559.59/12,483,901.80
  6. Step 6: Final answer
    x = 13,052,483.10

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Similar ratio
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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.