Home / 14,920.48-20,590.72-8,206.40

Finding the Fourth Proportional to 14,920.48, 20,590.72 and 8,206.40

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Solution

The fourth proportional to 14,920.48, 20,590.72 and 8,206.40 is: 11,325.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920.48 : 20,590.72 = 8,206.40 : x
  2. Step 2: Convert to fraction form
    14,920.48/20,590.72 = 8,206.40/x
  3. Step 3: Cross multiply
    14,920.48x = 20,590.72 × 8,206.40
  4. Step 4: Simplify right side
    14,920.48x = 168,975,684.61
  5. Step 5: Solve for x
    x = 168,975,684.61/14,920.48
  6. Step 6: Final answer
    x = 11,325.08

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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.