Home / 13,779.41-19,017.08-7,810.45

Finding the Fourth Proportional to 13,779.41, 19,017.08 and 7,810.45

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Solution

The fourth proportional to 13,779.41, 19,017.08 and 7,810.45 is: 10,779.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.41 : 19,017.08 = 7,810.45 : x
  2. Step 2: Convert to fraction form
    13,779.41/19,017.08 = 7,810.45/x
  3. Step 3: Cross multiply
    13,779.41x = 19,017.08 × 7,810.45
  4. Step 4: Simplify right side
    13,779.41x = 148,531,924.47
  5. Step 5: Solve for x
    x = 148,531,924.47/13,779.41
  6. Step 6: Final answer
    x = 10,779.26

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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.