Home / 15,485.55-21,348.90-10,640.13

Finding the Fourth Proportional to 15,485.55, 21,348.90 and 10,640.13

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Solution

The fourth proportional to 15,485.55, 21,348.90 and 10,640.13 is: 14,668.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.55 : 21,348.90 = 10,640.13 : x
  2. Step 2: Convert to fraction form
    15,485.55/21,348.90 = 10,640.13/x
  3. Step 3: Cross multiply
    15,485.55x = 21,348.90 × 10,640.13
  4. Step 4: Simplify right side
    15,485.55x = 227,155,071.36
  5. Step 5: Solve for x
    x = 227,155,071.36/15,485.55
  6. Step 6: Final answer
    x = 14,668.84

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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.