Home / 18,678,117.60-28,017,176.40-13,198,370.40

Finding the Fourth Proportional to 18,678,117.60, 28,017,176.40 and 13,198,370.40

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Solution

The fourth proportional to 18,678,117.60, 28,017,176.40 and 13,198,370.40 is: 19,797,555.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678,117.60 : 28,017,176.40 = 13,198,370.40 : x
  2. Step 2: Convert to fraction form
    18,678,117.60/28,017,176.40 = 13,198,370.40/x
  3. Step 3: Cross multiply
    18,678,117.60x = 28,017,176.40 × 13,198,370.40
  4. Step 4: Simplify right side
    18,678,117.60x = 369,781,071,689,338.56
  5. Step 5: Solve for x
    x = 369,781,071,689,338.56/18,678,117.60
  6. Step 6: Final answer
    x = 19,797,555.60

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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.