Home / 19,222.80-26,521.40-12,938.80

Finding the Fourth Proportional to 19,222.80, 26,521.40 and 12,938.80

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Solution

The fourth proportional to 19,222.80, 26,521.40 and 12,938.80 is: 17,851.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,222.80 : 26,521.40 = 12,938.80 : x
  2. Step 2: Convert to fraction form
    19,222.80/26,521.40 = 12,938.80/x
  3. Step 3: Cross multiply
    19,222.80x = 26,521.40 × 12,938.80
  4. Step 4: Simplify right side
    19,222.80x = 343,155,090.32
  5. Step 5: Solve for x
    x = 343,155,090.32/19,222.80
  6. Step 6: Final answer
    x = 17,851.46

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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.