Home / 38,386.32-52,972.32-21,390.50

Finding the Fourth Proportional to 38,386.32, 52,972.32 and 21,390.50

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Solution

The fourth proportional to 38,386.32, 52,972.32 and 21,390.50 is: 29,518.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,386.32 : 52,972.32 = 21,390.50 : x
  2. Step 2: Convert to fraction form
    38,386.32/52,972.32 = 21,390.50/x
  3. Step 3: Cross multiply
    38,386.32x = 52,972.32 × 21,390.50
  4. Step 4: Simplify right side
    38,386.32x = 1,133,104,146.10
  5. Step 5: Solve for x
    x = 1,133,104,146.10/38,386.32
  6. Step 6: Final answer
    x = 29,518.44

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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.