Home / 15,462.51-21,328.77-13,664.22

Finding the Fourth Proportional to 15,462.51, 21,328.77 and 13,664.22

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Solution

The fourth proportional to 15,462.51, 21,328.77 and 13,664.22 is: 18,848.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,462.51 : 21,328.77 = 13,664.22 : x
  2. Step 2: Convert to fraction form
    15,462.51/21,328.77 = 13,664.22/x
  3. Step 3: Cross multiply
    15,462.51x = 21,328.77 × 13,664.22
  4. Step 4: Simplify right side
    15,462.51x = 291,441,005.61
  5. Step 5: Solve for x
    x = 291,441,005.61/15,462.51
  6. Step 6: Final answer
    x = 18,848.23

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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.