Home / 25,712.64-35,486.08-15,641.80

Finding the Fourth Proportional to 25,712.64, 35,486.08 and 15,641.80

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Solution

The fourth proportional to 25,712.64, 35,486.08 and 15,641.80 is: 21,587.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,712.64 : 35,486.08 = 15,641.80 : x
  2. Step 2: Convert to fraction form
    25,712.64/35,486.08 = 15,641.80/x
  3. Step 3: Cross multiply
    25,712.64x = 35,486.08 × 15,641.80
  4. Step 4: Simplify right side
    25,712.64x = 555,066,166.14
  5. Step 5: Solve for x
    x = 555,066,166.14/25,712.64
  6. Step 6: Final answer
    x = 21,587.29

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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.