Home / 12,988.04-17,923.57-7,019.70

Finding the Fourth Proportional to 12,988.04, 17,923.57 and 7,019.70

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Solution

The fourth proportional to 12,988.04, 17,923.57 and 7,019.70 is: 9,687.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.04 : 17,923.57 = 7,019.70 : x
  2. Step 2: Convert to fraction form
    12,988.04/17,923.57 = 7,019.70/x
  3. Step 3: Cross multiply
    12,988.04x = 17,923.57 × 7,019.70
  4. Step 4: Simplify right side
    12,988.04x = 125,818,039.05
  5. Step 5: Solve for x
    x = 125,818,039.05/12,988.04
  6. Step 6: Final answer
    x = 9,687.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.