Home / 13,886.52-20,926.38-12,570.68

Finding the Fourth Proportional to 13,886.52, 20,926.38 and 12,570.68

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Solution

The fourth proportional to 13,886.52, 20,926.38 and 12,570.68 is: 18,943.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,886.52 : 20,926.38 = 12,570.68 : x
  2. Step 2: Convert to fraction form
    13,886.52/20,926.38 = 12,570.68/x
  3. Step 3: Cross multiply
    13,886.52x = 20,926.38 × 12,570.68
  4. Step 4: Simplify right side
    13,886.52x = 263,058,721.91
  5. Step 5: Solve for x
    x = 263,058,721.91/13,886.52
  6. Step 6: Final answer
    x = 18,943.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.