Home / 21,779.64-30,045.60-14,708.52

Finding the Fourth Proportional to 21,779.64, 30,045.60 and 14,708.52

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Solution

The fourth proportional to 21,779.64, 30,045.60 and 14,708.52 is: 20,290.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.64 : 30,045.60 = 14,708.52 : x
  2. Step 2: Convert to fraction form
    21,779.64/30,045.60 = 14,708.52/x
  3. Step 3: Cross multiply
    21,779.64x = 30,045.60 × 14,708.52
  4. Step 4: Simplify right side
    21,779.64x = 441,926,308.51
  5. Step 5: Solve for x
    x = 441,926,308.51/21,779.64
  6. Step 6: Final answer
    x = 20,290.80

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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.