Home / 17,938.38-26,870.64-10,520.40

Finding the Fourth Proportional to 17,938.38, 26,870.64 and 10,520.40

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Solution

The fourth proportional to 17,938.38, 26,870.64 and 10,520.40 is: 15,758.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,938.38 : 26,870.64 = 10,520.40 : x
  2. Step 2: Convert to fraction form
    17,938.38/26,870.64 = 10,520.40/x
  3. Step 3: Cross multiply
    17,938.38x = 26,870.64 × 10,520.40
  4. Step 4: Simplify right side
    17,938.38x = 282,689,881.06
  5. Step 5: Solve for x
    x = 282,689,881.06/17,938.38
  6. Step 6: Final answer
    x = 15,758.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.