Home / 15,884.10-21,875.67-15,539.72

Finding the Fourth Proportional to 15,884.10, 21,875.67 and 15,539.72

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Solution

The fourth proportional to 15,884.10, 21,875.67 and 15,539.72 is: 21,401.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,884.10 : 21,875.67 = 15,539.72 : x
  2. Step 2: Convert to fraction form
    15,884.10/21,875.67 = 15,539.72/x
  3. Step 3: Cross multiply
    15,884.10x = 21,875.67 × 15,539.72
  4. Step 4: Simplify right side
    15,884.10x = 339,941,677.23
  5. Step 5: Solve for x
    x = 339,941,677.23/15,884.10
  6. Step 6: Final answer
    x = 21,401.38

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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.