Home / 26,287.20-39,430.80-13,802.40

Finding the Fourth Proportional to 26,287.20, 39,430.80 and 13,802.40

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Solution

The fourth proportional to 26,287.20, 39,430.80 and 13,802.40 is: 20,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,287.20 : 39,430.80 = 13,802.40 : x
  2. Step 2: Convert to fraction form
    26,287.20/39,430.80 = 13,802.40/x
  3. Step 3: Cross multiply
    26,287.20x = 39,430.80 × 13,802.40
  4. Step 4: Simplify right side
    26,287.20x = 544,239,673.92
  5. Step 5: Solve for x
    x = 544,239,673.92/26,287.20
  6. Step 6: Final answer
    x = 20,703.60

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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.