Home / 25,853.76-35,681.52-15,780.08

Finding the Fourth Proportional to 25,853.76, 35,681.52 and 15,780.08

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Solution

The fourth proportional to 25,853.76, 35,681.52 and 15,780.08 is: 21,778.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,853.76 : 35,681.52 = 15,780.08 : x
  2. Step 2: Convert to fraction form
    25,853.76/35,681.52 = 15,780.08/x
  3. Step 3: Cross multiply
    25,853.76x = 35,681.52 × 15,780.08
  4. Step 4: Simplify right side
    25,853.76x = 563,057,240.12
  5. Step 5: Solve for x
    x = 563,057,240.12/25,853.76
  6. Step 6: Final answer
    x = 21,778.54

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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.