Home / 15,702.60-21,667.80-8,990.04

Finding the Fourth Proportional to 15,702.60, 21,667.80 and 8,990.04

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Solution

The fourth proportional to 15,702.60, 21,667.80 and 8,990.04 is: 12,405.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.60 : 21,667.80 = 8,990.04 : x
  2. Step 2: Convert to fraction form
    15,702.60/21,667.80 = 8,990.04/x
  3. Step 3: Cross multiply
    15,702.60x = 21,667.80 × 8,990.04
  4. Step 4: Simplify right side
    15,702.60x = 194,794,388.71
  5. Step 5: Solve for x
    x = 194,794,388.71/15,702.60
  6. Step 6: Final answer
    x = 12,405.23

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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.