Home / 28,018.19-42,013.58-9,291.93

Finding the Fourth Proportional to 28,018.19, 42,013.58 and 9,291.93

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Solution

The fourth proportional to 28,018.19, 42,013.58 and 9,291.93 is: 13,933.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.19 : 42,013.58 = 9,291.93 : x
  2. Step 2: Convert to fraction form
    28,018.19/42,013.58 = 9,291.93/x
  3. Step 3: Cross multiply
    28,018.19x = 42,013.58 × 9,291.93
  4. Step 4: Simplify right side
    28,018.19x = 390,387,197.95
  5. Step 5: Solve for x
    x = 390,387,197.95/28,018.19
  6. Step 6: Final answer
    x = 13,933.35

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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.