Home / 21,613.08-29,828.47-12,668.15

Finding the Fourth Proportional to 21,613.08, 29,828.47 and 12,668.15

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Solution

The fourth proportional to 21,613.08, 29,828.47 and 12,668.15 is: 17,483.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.08 : 29,828.47 = 12,668.15 : x
  2. Step 2: Convert to fraction form
    21,613.08/29,828.47 = 12,668.15/x
  3. Step 3: Cross multiply
    21,613.08x = 29,828.47 × 12,668.15
  4. Step 4: Simplify right side
    21,613.08x = 377,871,598.88
  5. Step 5: Solve for x
    x = 377,871,598.88/21,613.08
  6. Step 6: Final answer
    x = 17,483.47

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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.