Home / 13,587.10-20,386.68-8,655.46

Finding the Fourth Proportional to 13,587.10, 20,386.68 and 8,655.46

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Solution

The fourth proportional to 13,587.10, 20,386.68 and 8,655.46 is: 12,987.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.10 : 20,386.68 = 8,655.46 : x
  2. Step 2: Convert to fraction form
    13,587.10/20,386.68 = 8,655.46/x
  3. Step 3: Cross multiply
    13,587.10x = 20,386.68 × 8,655.46
  4. Step 4: Simplify right side
    13,587.10x = 176,456,093.27
  5. Step 5: Solve for x
    x = 176,456,093.27/13,587.10
  6. Step 6: Final answer
    x = 12,987.03

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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.