Home / 15,479.04-21,355.05-8,763.12

Finding the Fourth Proportional to 15,479.04, 21,355.05 and 8,763.12

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Solution

The fourth proportional to 15,479.04, 21,355.05 and 8,763.12 is: 12,089.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,479.04 : 21,355.05 = 8,763.12 : x
  2. Step 2: Convert to fraction form
    15,479.04/21,355.05 = 8,763.12/x
  3. Step 3: Cross multiply
    15,479.04x = 21,355.05 × 8,763.12
  4. Step 4: Simplify right side
    15,479.04x = 187,136,865.76
  5. Step 5: Solve for x
    x = 187,136,865.76/15,479.04
  6. Step 6: Final answer
    x = 12,089.69

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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.