Home / 18,681.17-25,779.67-10,615.59

Finding the Fourth Proportional to 18,681.17, 25,779.67 and 10,615.59

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Solution

The fourth proportional to 18,681.17, 25,779.67 and 10,615.59 is: 14,649.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.17 : 25,779.67 = 10,615.59 : x
  2. Step 2: Convert to fraction form
    18,681.17/25,779.67 = 10,615.59/x
  3. Step 3: Cross multiply
    18,681.17x = 25,779.67 × 10,615.59
  4. Step 4: Simplify right side
    18,681.17x = 273,666,380.52
  5. Step 5: Solve for x
    x = 273,666,380.52/18,681.17
  6. Step 6: Final answer
    x = 14,649.32

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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.