Home / 14,990.19-20,686.35-8,275.83

Finding the Fourth Proportional to 14,990.19, 20,686.35 and 8,275.83

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Solution

The fourth proportional to 14,990.19, 20,686.35 and 8,275.83 is: 11,420.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.19 : 20,686.35 = 8,275.83 : x
  2. Step 2: Convert to fraction form
    14,990.19/20,686.35 = 8,275.83/x
  3. Step 3: Cross multiply
    14,990.19x = 20,686.35 × 8,275.83
  4. Step 4: Simplify right side
    14,990.19x = 171,196,715.92
  5. Step 5: Solve for x
    x = 171,196,715.92/14,990.19
  6. Step 6: Final answer
    x = 11,420.58

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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.