Home / 15,875.03-21,908.54-9,161.89

Finding the Fourth Proportional to 15,875.03, 21,908.54 and 9,161.89

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Solution

The fourth proportional to 15,875.03, 21,908.54 and 9,161.89 is: 12,643.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.03 : 21,908.54 = 9,161.89 : x
  2. Step 2: Convert to fraction form
    15,875.03/21,908.54 = 9,161.89/x
  3. Step 3: Cross multiply
    15,875.03x = 21,908.54 × 9,161.89
  4. Step 4: Simplify right side
    15,875.03x = 200,723,478.19
  5. Step 5: Solve for x
    x = 200,723,478.19/15,875.03
  6. Step 6: Final answer
    x = 12,643.97

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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.