Home / 15,459.89-21,328.57-10,088.62

Finding the Fourth Proportional to 15,459.89, 21,328.57 and 10,088.62

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Solution

The fourth proportional to 15,459.89, 21,328.57 and 10,088.62 is: 13,918.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.89 : 21,328.57 = 10,088.62 : x
  2. Step 2: Convert to fraction form
    15,459.89/21,328.57 = 10,088.62/x
  3. Step 3: Cross multiply
    15,459.89x = 21,328.57 × 10,088.62
  4. Step 4: Simplify right side
    15,459.89x = 215,175,759.33
  5. Step 5: Solve for x
    x = 215,175,759.33/15,459.89
  6. Step 6: Final answer
    x = 13,918.32

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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.