Home / 13,586.40-18,750.84-8,281.92

Finding the Fourth Proportional to 13,586.40, 18,750.84 and 8,281.92

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Solution

The fourth proportional to 13,586.40, 18,750.84 and 8,281.92 is: 11,430.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.40 : 18,750.84 = 8,281.92 : x
  2. Step 2: Convert to fraction form
    13,586.40/18,750.84 = 8,281.92/x
  3. Step 3: Cross multiply
    13,586.40x = 18,750.84 × 8,281.92
  4. Step 4: Simplify right side
    13,586.40x = 155,292,956.81
  5. Step 5: Solve for x
    x = 155,292,956.81/13,586.40
  6. Step 6: Final answer
    x = 11,430.03

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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.