Home / 19,915.72-27,486.36-12,862.64

Finding the Fourth Proportional to 19,915.72, 27,486.36 and 12,862.64

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Solution

The fourth proportional to 19,915.72, 27,486.36 and 12,862.64 is: 17,752.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.72 : 27,486.36 = 12,862.64 : x
  2. Step 2: Convert to fraction form
    19,915.72/27,486.36 = 12,862.64/x
  3. Step 3: Cross multiply
    19,915.72x = 27,486.36 × 12,862.64
  4. Step 4: Simplify right side
    19,915.72x = 353,547,222.31
  5. Step 5: Solve for x
    x = 353,547,222.31/19,915.72
  6. Step 6: Final answer
    x = 17,752.17

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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.