Home / 13,779.81-19,016.25-7,492.20

Finding the Fourth Proportional to 13,779.81, 19,016.25 and 7,492.20

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Solution

The fourth proportional to 13,779.81, 19,016.25 and 7,492.20 is: 10,339.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.81 : 19,016.25 = 7,492.20 : x
  2. Step 2: Convert to fraction form
    13,779.81/19,016.25 = 7,492.20/x
  3. Step 3: Cross multiply
    13,779.81x = 19,016.25 × 7,492.20
  4. Step 4: Simplify right side
    13,779.81x = 142,473,548.25
  5. Step 5: Solve for x
    x = 142,473,548.25/13,779.81
  6. Step 6: Final answer
    x = 10,339.30

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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.