Home / 19,938.60-27,510.30-12,856.50

Finding the Fourth Proportional to 19,938.60, 27,510.30 and 12,856.50

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Solution

The fourth proportional to 19,938.60, 27,510.30 and 12,856.50 is: 17,738.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.60 : 27,510.30 = 12,856.50 : x
  2. Step 2: Convert to fraction form
    19,938.60/27,510.30 = 12,856.50/x
  3. Step 3: Cross multiply
    19,938.60x = 27,510.30 × 12,856.50
  4. Step 4: Simplify right side
    19,938.60x = 353,686,171.95
  5. Step 5: Solve for x
    x = 353,686,171.95/19,938.60
  6. Step 6: Final answer
    x = 17,738.77

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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.