Home / 13,507.80-18,650.65-8,730.57

Finding the Fourth Proportional to 13,507.80, 18,650.65 and 8,730.57

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Solution

The fourth proportional to 13,507.80, 18,650.65 and 8,730.57 is: 12,054.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.80 : 18,650.65 = 8,730.57 : x
  2. Step 2: Convert to fraction form
    13,507.80/18,650.65 = 8,730.57/x
  3. Step 3: Cross multiply
    13,507.80x = 18,650.65 × 8,730.57
  4. Step 4: Simplify right side
    13,507.80x = 162,830,808.34
  5. Step 5: Solve for x
    x = 162,830,808.34/13,507.80
  6. Step 6: Final answer
    x = 12,054.57

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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.