Home / 26,289.07-39,400.80-13,145.20

Finding the Fourth Proportional to 26,289.07, 39,400.80 and 13,145.20

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Solution

The fourth proportional to 26,289.07, 39,400.80 and 13,145.20 is: 19,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,289.07 : 39,400.80 = 13,145.20 : x
  2. Step 2: Convert to fraction form
    26,289.07/39,400.80 = 13,145.20/x
  3. Step 3: Cross multiply
    26,289.07x = 39,400.80 × 13,145.20
  4. Step 4: Simplify right side
    26,289.07x = 517,931,396.16
  5. Step 5: Solve for x
    x = 517,931,396.16/26,289.07
  6. Step 6: Final answer
    x = 19,701.40

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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.