Home / 15,370.16-21,210.60-8,655.86

Finding the Fourth Proportional to 15,370.16, 21,210.60 and 8,655.86

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Solution

The fourth proportional to 15,370.16, 21,210.60 and 8,655.86 is: 11,944.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,370.16 : 21,210.60 = 8,655.86 : x
  2. Step 2: Convert to fraction form
    15,370.16/21,210.60 = 8,655.86/x
  3. Step 3: Cross multiply
    15,370.16x = 21,210.60 × 8,655.86
  4. Step 4: Simplify right side
    15,370.16x = 183,595,984.12
  5. Step 5: Solve for x
    x = 183,595,984.12/15,370.16
  6. Step 6: Final answer
    x = 11,944.96

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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.