Home / 20,968.16-28,948.36-13,014.76

Finding the Fourth Proportional to 20,968.16, 28,948.36 and 13,014.76

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Solution

The fourth proportional to 20,968.16, 28,948.36 and 13,014.76 is: 17,968.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.16 : 28,948.36 = 13,014.76 : x
  2. Step 2: Convert to fraction form
    20,968.16/28,948.36 = 13,014.76/x
  3. Step 3: Cross multiply
    20,968.16x = 28,948.36 × 13,014.76
  4. Step 4: Simplify right side
    20,968.16x = 376,755,957.79
  5. Step 5: Solve for x
    x = 376,755,957.79/20,968.16
  6. Step 6: Final answer
    x = 17,968.00

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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.