Home / 18,938.81-26,135.58-10,985.66

Finding the Fourth Proportional to 18,938.81, 26,135.58 and 10,985.66

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Solution

The fourth proportional to 18,938.81, 26,135.58 and 10,985.66 is: 15,160.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.81 : 26,135.58 = 10,985.66 : x
  2. Step 2: Convert to fraction form
    18,938.81/26,135.58 = 10,985.66/x
  3. Step 3: Cross multiply
    18,938.81x = 26,135.58 × 10,985.66
  4. Step 4: Simplify right side
    18,938.81x = 287,116,465.10
  5. Step 5: Solve for x
    x = 287,116,465.10/18,938.81
  6. Step 6: Final answer
    x = 15,160.22

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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.