Home / 21,210.04-29,268.15-12,258.12

Finding the Fourth Proportional to 21,210.04, 29,268.15 and 12,258.12

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Solution

The fourth proportional to 21,210.04, 29,268.15 and 12,258.12 is: 16,915.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.04 : 29,268.15 = 12,258.12 : x
  2. Step 2: Convert to fraction form
    21,210.04/29,268.15 = 12,258.12/x
  3. Step 3: Cross multiply
    21,210.04x = 29,268.15 × 12,258.12
  4. Step 4: Simplify right side
    21,210.04x = 358,772,494.88
  5. Step 5: Solve for x
    x = 358,772,494.88/21,210.04
  6. Step 6: Final answer
    x = 16,915.22

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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.