Home / 13,531.04-18,671.22-7,480.47

Finding the Fourth Proportional to 13,531.04, 18,671.22 and 7,480.47

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Solution

The fourth proportional to 13,531.04, 18,671.22 and 7,480.47 is: 10,322.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.04 : 18,671.22 = 7,480.47 : x
  2. Step 2: Convert to fraction form
    13,531.04/18,671.22 = 7,480.47/x
  3. Step 3: Cross multiply
    13,531.04x = 18,671.22 × 7,480.47
  4. Step 4: Simplify right side
    13,531.04x = 139,669,501.07
  5. Step 5: Solve for x
    x = 139,669,501.07/13,531.04
  6. Step 6: Final answer
    x = 10,322.16

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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.