Home / 31,316.80-46,934.88-13,782.08

Finding the Fourth Proportional to 31,316.80, 46,934.88 and 13,782.08

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Solution

The fourth proportional to 31,316.80, 46,934.88 and 13,782.08 is: 20,655.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,316.80 : 46,934.88 = 13,782.08 : x
  2. Step 2: Convert to fraction form
    31,316.80/46,934.88 = 13,782.08/x
  3. Step 3: Cross multiply
    31,316.80x = 46,934.88 × 13,782.08
  4. Step 4: Simplify right side
    31,316.80x = 646,860,270.95
  5. Step 5: Solve for x
    x = 646,860,270.95/31,316.80
  6. Step 6: Final answer
    x = 20,655.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.