Home / 15,681.89-21,633.72-10,013.75

Finding the Fourth Proportional to 15,681.89, 21,633.72 and 10,013.75

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Solution

The fourth proportional to 15,681.89, 21,633.72 and 10,013.75 is: 13,814.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,681.89 : 21,633.72 = 10,013.75 : x
  2. Step 2: Convert to fraction form
    15,681.89/21,633.72 = 10,013.75/x
  3. Step 3: Cross multiply
    15,681.89x = 21,633.72 × 10,013.75
  4. Step 4: Simplify right side
    15,681.89x = 216,634,555.48
  5. Step 5: Solve for x
    x = 216,634,555.48/15,681.89
  6. Step 6: Final answer
    x = 13,814.32

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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.