Home / 21,135.65-31,702.39-7,095.79

Finding the Fourth Proportional to 21,135.65, 31,702.39 and 7,095.79

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Solution

The fourth proportional to 21,135.65, 31,702.39 and 7,095.79 is: 10,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.65 : 31,702.39 = 7,095.79 : x
  2. Step 2: Convert to fraction form
    21,135.65/31,702.39 = 7,095.79/x
  3. Step 3: Cross multiply
    21,135.65x = 31,702.39 × 7,095.79
  4. Step 4: Simplify right side
    21,135.65x = 224,953,307.95
  5. Step 5: Solve for x
    x = 224,953,307.95/21,135.65
  6. Step 6: Final answer
    x = 10,643.31

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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.