Home / 19,386.67-28,948.68-15,393.12

Finding the Fourth Proportional to 19,386.67, 28,948.68 and 15,393.12

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Solution

The fourth proportional to 19,386.67, 28,948.68 and 15,393.12 is: 22,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386.67 : 28,948.68 = 15,393.12 : x
  2. Step 2: Convert to fraction form
    19,386.67/28,948.68 = 15,393.12/x
  3. Step 3: Cross multiply
    19,386.67x = 28,948.68 × 15,393.12
  4. Step 4: Simplify right side
    19,386.67x = 445,610,321.86
  5. Step 5: Solve for x
    x = 445,610,321.86/19,386.67
  6. Step 6: Final answer
    x = 22,985.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.