Home / 28,012.40-42,017.79-9,293.30

Finding the Fourth Proportional to 28,012.40, 42,017.79 and 9,293.30

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Solution

The fourth proportional to 28,012.40, 42,017.79 and 9,293.30 is: 13,939.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.40 : 42,017.79 = 9,293.30 : x
  2. Step 2: Convert to fraction form
    28,012.40/42,017.79 = 9,293.30/x
  3. Step 3: Cross multiply
    28,012.40x = 42,017.79 × 9,293.30
  4. Step 4: Simplify right side
    28,012.40x = 390,483,927.81
  5. Step 5: Solve for x
    x = 390,483,927.81/28,012.40
  6. Step 6: Final answer
    x = 13,939.68

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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.