Home / 19,154.40-26,420.16-12,074.88

Finding the Fourth Proportional to 19,154.40, 26,420.16 and 12,074.88

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Solution

The fourth proportional to 19,154.40, 26,420.16 and 12,074.88 is: 16,655.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,154.40 : 26,420.16 = 12,074.88 : x
  2. Step 2: Convert to fraction form
    19,154.40/26,420.16 = 12,074.88/x
  3. Step 3: Cross multiply
    19,154.40x = 26,420.16 × 12,074.88
  4. Step 4: Simplify right side
    19,154.40x = 319,020,261.58
  5. Step 5: Solve for x
    x = 319,020,261.58/19,154.40
  6. Step 6: Final answer
    x = 16,655.19

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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.