Home / 20,585.03-28,407.71-12,624.35

Finding the Fourth Proportional to 20,585.03, 28,407.71 and 12,624.35

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Solution

The fourth proportional to 20,585.03, 28,407.71 and 12,624.35 is: 17,421.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.03 : 28,407.71 = 12,624.35 : x
  2. Step 2: Convert to fraction form
    20,585.03/28,407.71 = 12,624.35/x
  3. Step 3: Cross multiply
    20,585.03x = 28,407.71 × 12,624.35
  4. Step 4: Simplify right side
    20,585.03x = 358,628,763.26
  5. Step 5: Solve for x
    x = 358,628,763.26/20,585.03
  6. Step 6: Final answer
    x = 17,421.83

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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.