Home / 15,180.48-20,953.80-12,345.57

Finding the Fourth Proportional to 15,180.48, 20,953.80 and 12,345.57

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Solution

The fourth proportional to 15,180.48, 20,953.80 and 12,345.57 is: 17,040.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,180.48 : 20,953.80 = 12,345.57 : x
  2. Step 2: Convert to fraction form
    15,180.48/20,953.80 = 12,345.57/x
  3. Step 3: Cross multiply
    15,180.48x = 20,953.80 × 12,345.57
  4. Step 4: Simplify right side
    15,180.48x = 258,686,604.67
  5. Step 5: Solve for x
    x = 258,686,604.67/15,180.48
  6. Step 6: Final answer
    x = 17,040.74

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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.