Home / 25,210.36-34,780.20-15,139.36

Finding the Fourth Proportional to 25,210.36, 34,780.20 and 15,139.36

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Solution

The fourth proportional to 25,210.36, 34,780.20 and 15,139.36 is: 20,886.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,210.36 : 34,780.20 = 15,139.36 : x
  2. Step 2: Convert to fraction form
    25,210.36/34,780.20 = 15,139.36/x
  3. Step 3: Cross multiply
    25,210.36x = 34,780.20 × 15,139.36
  4. Step 4: Simplify right side
    25,210.36x = 526,549,968.67
  5. Step 5: Solve for x
    x = 526,549,968.67/25,210.36
  6. Step 6: Final answer
    x = 20,886.25

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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.