Home / 15,567.81-21,480.96-14,779.68

Finding the Fourth Proportional to 15,567.81, 21,480.96 and 14,779.68

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Solution

The fourth proportional to 15,567.81, 21,480.96 and 14,779.68 is: 20,393.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,567.81 : 21,480.96 = 14,779.68 : x
  2. Step 2: Convert to fraction form
    15,567.81/21,480.96 = 14,779.68/x
  3. Step 3: Cross multiply
    15,567.81x = 21,480.96 × 14,779.68
  4. Step 4: Simplify right side
    15,567.81x = 317,481,714.89
  5. Step 5: Solve for x
    x = 317,481,714.89/15,567.81
  6. Step 6: Final answer
    x = 20,393.47

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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.