Home / 19,689.48-29,522.88-8,590.86

Finding the Fourth Proportional to 19,689.48, 29,522.88 and 8,590.86

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Solution

The fourth proportional to 19,689.48, 29,522.88 and 8,590.86 is: 12,881.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.48 : 29,522.88 = 8,590.86 : x
  2. Step 2: Convert to fraction form
    19,689.48/29,522.88 = 8,590.86/x
  3. Step 3: Cross multiply
    19,689.48x = 29,522.88 × 8,590.86
  4. Step 4: Simplify right side
    19,689.48x = 253,626,928.88
  5. Step 5: Solve for x
    x = 253,626,928.88/19,689.48
  6. Step 6: Final answer
    x = 12,881.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.