Home / 28,779.01-43,165.40-7,721.17

Finding the Fourth Proportional to 28,779.01, 43,165.40 and 7,721.17

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Solution

The fourth proportional to 28,779.01, 43,165.40 and 7,721.17 is: 11,580.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.01 : 43,165.40 = 7,721.17 : x
  2. Step 2: Convert to fraction form
    28,779.01/43,165.40 = 7,721.17/x
  3. Step 3: Cross multiply
    28,779.01x = 43,165.40 × 7,721.17
  4. Step 4: Simplify right side
    28,779.01x = 333,287,391.52
  5. Step 5: Solve for x
    x = 333,287,391.52/28,779.01
  6. Step 6: Final answer
    x = 11,580.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.