Home / 15,484.03-21,319.40-13,665.17

Finding the Fourth Proportional to 15,484.03, 21,319.40 and 13,665.17

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Solution

The fourth proportional to 15,484.03, 21,319.40 and 13,665.17 is: 18,815.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,484.03 : 21,319.40 = 13,665.17 : x
  2. Step 2: Convert to fraction form
    15,484.03/21,319.40 = 13,665.17/x
  3. Step 3: Cross multiply
    15,484.03x = 21,319.40 × 13,665.17
  4. Step 4: Simplify right side
    15,484.03x = 291,333,156.97
  5. Step 5: Solve for x
    x = 291,333,156.97/15,484.03
  6. Step 6: Final answer
    x = 18,815.08

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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.