Home / 19,915.04-29,886.12-8,228.18

Finding the Fourth Proportional to 19,915.04, 29,886.12 and 8,228.18

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Solution

The fourth proportional to 19,915.04, 29,886.12 and 8,228.18 is: 12,347.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.04 : 29,886.12 = 8,228.18 : x
  2. Step 2: Convert to fraction form
    19,915.04/29,886.12 = 8,228.18/x
  3. Step 3: Cross multiply
    19,915.04x = 29,886.12 × 8,228.18
  4. Step 4: Simplify right side
    19,915.04x = 245,908,225.43
  5. Step 5: Solve for x
    x = 245,908,225.43/19,915.04
  6. Step 6: Final answer
    x = 12,347.87

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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.