Home / 15,389.75-21,237.80-8,316.16

Finding the Fourth Proportional to 15,389.75, 21,237.80 and 8,316.16

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Solution

The fourth proportional to 15,389.75, 21,237.80 and 8,316.16 is: 11,476.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.75 : 21,237.80 = 8,316.16 : x
  2. Step 2: Convert to fraction form
    15,389.75/21,237.80 = 8,316.16/x
  3. Step 3: Cross multiply
    15,389.75x = 21,237.80 × 8,316.16
  4. Step 4: Simplify right side
    15,389.75x = 176,616,848.17
  5. Step 5: Solve for x
    x = 176,616,848.17/15,389.75
  6. Step 6: Final answer
    x = 11,476.26

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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.