Home / 12,966.42-17,878.95-11,272.98

Finding the Fourth Proportional to 12,966.42, 17,878.95 and 11,272.98

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Solution

The fourth proportional to 12,966.42, 17,878.95 and 11,272.98 is: 15,543.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,966.42 : 17,878.95 = 11,272.98 : x
  2. Step 2: Convert to fraction form
    12,966.42/17,878.95 = 11,272.98/x
  3. Step 3: Cross multiply
    12,966.42x = 17,878.95 × 11,272.98
  4. Step 4: Simplify right side
    12,966.42x = 201,549,045.77
  5. Step 5: Solve for x
    x = 201,549,045.77/12,966.42
  6. Step 6: Final answer
    x = 15,543.92

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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.