Home / 21,307.65-31,946.89-11,436.99

Finding the Fourth Proportional to 21,307.65, 31,946.89 and 11,436.99

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Solution

The fourth proportional to 21,307.65, 31,946.89 and 11,436.99 is: 17,147.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.65 : 31,946.89 = 11,436.99 : x
  2. Step 2: Convert to fraction form
    21,307.65/31,946.89 = 11,436.99/x
  3. Step 3: Cross multiply
    21,307.65x = 31,946.89 × 11,436.99
  4. Step 4: Simplify right side
    21,307.65x = 365,376,261.46
  5. Step 5: Solve for x
    x = 365,376,261.46/21,307.65
  6. Step 6: Final answer
    x = 17,147.66

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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.