Home / 12,487.63-18,740.67-5,913.81

Finding the Fourth Proportional to 12,487.63, 18,740.67 and 5,913.81

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Solution

The fourth proportional to 12,487.63, 18,740.67 and 5,913.81 is: 8,875.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.63 : 18,740.67 = 5,913.81 : x
  2. Step 2: Convert to fraction form
    12,487.63/18,740.67 = 5,913.81/x
  3. Step 3: Cross multiply
    12,487.63x = 18,740.67 × 5,913.81
  4. Step 4: Simplify right side
    12,487.63x = 110,828,761.65
  5. Step 5: Solve for x
    x = 110,828,761.65/12,487.63
  6. Step 6: Final answer
    x = 8,875.08

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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.