Home / 18,686.74-28,029.67-4,646.81

Finding the Fourth Proportional to 18,686.74, 28,029.67 and 4,646.81

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Solution

The fourth proportional to 18,686.74, 28,029.67 and 4,646.81 is: 6,970.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.74 : 28,029.67 = 4,646.81 : x
  2. Step 2: Convert to fraction form
    18,686.74/28,029.67 = 4,646.81/x
  3. Step 3: Cross multiply
    18,686.74x = 28,029.67 × 4,646.81
  4. Step 4: Simplify right side
    18,686.74x = 130,248,550.85
  5. Step 5: Solve for x
    x = 130,248,550.85/18,686.74
  6. Step 6: Final answer
    x = 6,970.11

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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.