Home / 18,567.05-27,856.95-5,421.35

Finding the Fourth Proportional to 18,567.05, 27,856.95 and 5,421.35

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Solution

The fourth proportional to 18,567.05, 27,856.95 and 5,421.35 is: 8,133.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,567.05 : 27,856.95 = 5,421.35 : x
  2. Step 2: Convert to fraction form
    18,567.05/27,856.95 = 5,421.35/x
  3. Step 3: Cross multiply
    18,567.05x = 27,856.95 × 5,421.35
  4. Step 4: Simplify right side
    18,567.05x = 151,022,275.88
  5. Step 5: Solve for x
    x = 151,022,275.88/18,567.05
  6. Step 6: Final answer
    x = 8,133.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.