Home / 25,846.09-35,671.53-15,780.40

Finding the Fourth Proportional to 25,846.09, 35,671.53 and 15,780.40

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Solution

The fourth proportional to 25,846.09, 35,671.53 and 15,780.40 is: 21,779.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,846.09 : 35,671.53 = 15,780.40 : x
  2. Step 2: Convert to fraction form
    25,846.09/35,671.53 = 15,780.40/x
  3. Step 3: Cross multiply
    25,846.09x = 35,671.53 × 15,780.40
  4. Step 4: Simplify right side
    25,846.09x = 562,911,012.01
  5. Step 5: Solve for x
    x = 562,911,012.01/25,846.09
  6. Step 6: Final answer
    x = 21,779.35

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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.