Home / 28,242.19-42,393.93-21,242.17

Finding the Fourth Proportional to 28,242.19, 42,393.93 and 21,242.17

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Solution

The fourth proportional to 28,242.19, 42,393.93 and 21,242.17 is: 31,886.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.19 : 42,393.93 = 21,242.17 : x
  2. Step 2: Convert to fraction form
    28,242.19/42,393.93 = 21,242.17/x
  3. Step 3: Cross multiply
    28,242.19x = 42,393.93 × 21,242.17
  4. Step 4: Simplify right side
    28,242.19x = 900,539,068.03
  5. Step 5: Solve for x
    x = 900,539,068.03/28,242.19
  6. Step 6: Final answer
    x = 31,886.30

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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.