Home / 25,842.80-35,666.95-15,777.09

Finding the Fourth Proportional to 25,842.80, 35,666.95 and 15,777.09

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Solution

The fourth proportional to 25,842.80, 35,666.95 and 15,777.09 is: 21,774.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,842.80 : 35,666.95 = 15,777.09 : x
  2. Step 2: Convert to fraction form
    25,842.80/35,666.95 = 15,777.09/x
  3. Step 3: Cross multiply
    25,842.80x = 35,666.95 × 15,777.09
  4. Step 4: Simplify right side
    25,842.80x = 562,720,680.18
  5. Step 5: Solve for x
    x = 562,720,680.18/25,842.80
  6. Step 6: Final answer
    x = 21,774.76

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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.