Home / 15,030.57-20,740.95-8,656.83

Finding the Fourth Proportional to 15,030.57, 20,740.95 and 8,656.83

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Solution

The fourth proportional to 15,030.57, 20,740.95 and 8,656.83 is: 11,945.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.57 : 20,740.95 = 8,656.83 : x
  2. Step 2: Convert to fraction form
    15,030.57/20,740.95 = 8,656.83/x
  3. Step 3: Cross multiply
    15,030.57x = 20,740.95 × 8,656.83
  4. Step 4: Simplify right side
    15,030.57x = 179,550,878.19
  5. Step 5: Solve for x
    x = 179,550,878.19/15,030.57
  6. Step 6: Final answer
    x = 11,945.71

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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.