Home / 15,506.49-21,398.47-9,131.62

Finding the Fourth Proportional to 15,506.49, 21,398.47 and 9,131.62

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Solution

The fourth proportional to 15,506.49, 21,398.47 and 9,131.62 is: 12,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.49 : 21,398.47 = 9,131.62 : x
  2. Step 2: Convert to fraction form
    15,506.49/21,398.47 = 9,131.62/x
  3. Step 3: Cross multiply
    15,506.49x = 21,398.47 × 9,131.62
  4. Step 4: Simplify right side
    15,506.49x = 195,402,696.62
  5. Step 5: Solve for x
    x = 195,402,696.62/15,506.49
  6. Step 6: Final answer
    x = 12,601.35

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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.