Home / 13,988.34-19,303.56-7,939.71

Finding the Fourth Proportional to 13,988.34, 19,303.56 and 7,939.71

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Solution

The fourth proportional to 13,988.34, 19,303.56 and 7,939.71 is: 10,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.34 : 19,303.56 = 7,939.71 : x
  2. Step 2: Convert to fraction form
    13,988.34/19,303.56 = 7,939.71/x
  3. Step 3: Cross multiply
    13,988.34x = 19,303.56 × 7,939.71
  4. Step 4: Simplify right side
    13,988.34x = 153,264,668.37
  5. Step 5: Solve for x
    x = 153,264,668.37/13,988.34
  6. Step 6: Final answer
    x = 10,956.60

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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.