Home / 13,780.74-19,011.33-8,188.50

Finding the Fourth Proportional to 13,780.74, 19,011.33 and 8,188.50

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Solution

The fourth proportional to 13,780.74, 19,011.33 and 8,188.50 is: 11,296.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.74 : 19,011.33 = 8,188.50 : x
  2. Step 2: Convert to fraction form
    13,780.74/19,011.33 = 8,188.50/x
  3. Step 3: Cross multiply
    13,780.74x = 19,011.33 × 8,188.50
  4. Step 4: Simplify right side
    13,780.74x = 155,674,275.71
  5. Step 5: Solve for x
    x = 155,674,275.71/13,780.74
  6. Step 6: Final answer
    x = 11,296.51

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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.