Home / 15,623.18-21,570.05-13,941.69

Finding the Fourth Proportional to 15,623.18, 21,570.05 and 13,941.69

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Solution

The fourth proportional to 15,623.18, 21,570.05 and 13,941.69 is: 19,248.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,623.18 : 21,570.05 = 13,941.69 : x
  2. Step 2: Convert to fraction form
    15,623.18/21,570.05 = 13,941.69/x
  3. Step 3: Cross multiply
    15,623.18x = 21,570.05 × 13,941.69
  4. Step 4: Simplify right side
    15,623.18x = 300,723,007.93
  5. Step 5: Solve for x
    x = 300,723,007.93/15,623.18
  6. Step 6: Final answer
    x = 19,248.52

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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.