Home / 38,246.40-52,780.32-21,479.28

Finding the Fourth Proportional to 38,246.40, 52,780.32 and 21,479.28

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Solution

The fourth proportional to 38,246.40, 52,780.32 and 21,479.28 is: 29,641.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,246.40 : 52,780.32 = 21,479.28 : x
  2. Step 2: Convert to fraction form
    38,246.40/52,780.32 = 21,479.28/x
  3. Step 3: Cross multiply
    38,246.40x = 52,780.32 × 21,479.28
  4. Step 4: Simplify right side
    38,246.40x = 1,133,683,271.77
  5. Step 5: Solve for x
    x = 1,133,683,271.77/38,246.40
  6. Step 6: Final answer
    x = 29,641.57

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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.