Home / 21,066.08-29,071.12-12,683.04

Finding the Fourth Proportional to 21,066.08, 29,071.12 and 12,683.04

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Solution

The fourth proportional to 21,066.08, 29,071.12 and 12,683.04 is: 17,502.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.08 : 29,071.12 = 12,683.04 : x
  2. Step 2: Convert to fraction form
    21,066.08/29,071.12 = 12,683.04/x
  3. Step 3: Cross multiply
    21,066.08x = 29,071.12 × 12,683.04
  4. Step 4: Simplify right side
    21,066.08x = 368,710,177.80
  5. Step 5: Solve for x
    x = 368,710,177.80/21,066.08
  6. Step 6: Final answer
    x = 17,502.55

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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.