Home / 15,281.65-21,057.06-12,285.46

Finding the Fourth Proportional to 15,281.65, 21,057.06 and 12,285.46

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Solution

The fourth proportional to 15,281.65, 21,057.06 and 12,285.46 is: 16,928.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.65 : 21,057.06 = 12,285.46 : x
  2. Step 2: Convert to fraction form
    15,281.65/21,057.06 = 12,285.46/x
  3. Step 3: Cross multiply
    15,281.65x = 21,057.06 × 12,285.46
  4. Step 4: Simplify right side
    15,281.65x = 258,695,668.35
  5. Step 5: Solve for x
    x = 258,695,668.35/15,281.65
  6. Step 6: Final answer
    x = 16,928.52

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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.