Home / 15,283.08-21,091.52-8,570.86

Finding the Fourth Proportional to 15,283.08, 21,091.52 and 8,570.86

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Solution

The fourth proportional to 15,283.08, 21,091.52 and 8,570.86 is: 11,828.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,283.08 : 21,091.52 = 8,570.86 : x
  2. Step 2: Convert to fraction form
    15,283.08/21,091.52 = 8,570.86/x
  3. Step 3: Cross multiply
    15,283.08x = 21,091.52 × 8,570.86
  4. Step 4: Simplify right side
    15,283.08x = 180,772,465.11
  5. Step 5: Solve for x
    x = 180,772,465.11/15,283.08
  6. Step 6: Final answer
    x = 11,828.27

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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.