Home / 31,428.03-43,368.10-18,505.26

Finding the Fourth Proportional to 31,428.03, 43,368.10 and 18,505.26

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Solution

The fourth proportional to 31,428.03, 43,368.10 and 18,505.26 is: 25,535.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,428.03 : 43,368.10 = 18,505.26 : x
  2. Step 2: Convert to fraction form
    31,428.03/43,368.10 = 18,505.26/x
  3. Step 3: Cross multiply
    31,428.03x = 43,368.10 × 18,505.26
  4. Step 4: Simplify right side
    31,428.03x = 802,537,966.21
  5. Step 5: Solve for x
    x = 802,537,966.21/31,428.03
  6. Step 6: Final answer
    x = 25,535.74

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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.