Home / 25,386.60-38,079.90-17,999.40

Finding the Fourth Proportional to 25,386.60, 38,079.90 and 17,999.40

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Solution

The fourth proportional to 25,386.60, 38,079.90 and 17,999.40 is: 26,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,386.60 : 38,079.90 = 17,999.40 : x
  2. Step 2: Convert to fraction form
    25,386.60/38,079.90 = 17,999.40/x
  3. Step 3: Cross multiply
    25,386.60x = 38,079.90 × 17,999.40
  4. Step 4: Simplify right side
    25,386.60x = 685,415,352.06
  5. Step 5: Solve for x
    x = 685,415,352.06/25,386.60
  6. Step 6: Final answer
    x = 26,999.10

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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.