Home / 15,443.74-21,301.08-9,779.41

Finding the Fourth Proportional to 15,443.74, 21,301.08 and 9,779.41

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Solution

The fourth proportional to 15,443.74, 21,301.08 and 9,779.41 is: 13,488.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.74 : 21,301.08 = 9,779.41 : x
  2. Step 2: Convert to fraction form
    15,443.74/21,301.08 = 9,779.41/x
  3. Step 3: Cross multiply
    15,443.74x = 21,301.08 × 9,779.41
  4. Step 4: Simplify right side
    15,443.74x = 208,311,888.26
  5. Step 5: Solve for x
    x = 208,311,888.26/15,443.74
  6. Step 6: Final answer
    x = 13,488.44

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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.