Home / 15,152.16-20,909.76-8,776.32

Finding the Fourth Proportional to 15,152.16, 20,909.76 and 8,776.32

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Solution

The fourth proportional to 15,152.16, 20,909.76 and 8,776.32 is: 12,111.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.16 : 20,909.76 = 8,776.32 : x
  2. Step 2: Convert to fraction form
    15,152.16/20,909.76 = 8,776.32/x
  3. Step 3: Cross multiply
    15,152.16x = 20,909.76 × 8,776.32
  4. Step 4: Simplify right side
    15,152.16x = 183,510,744.88
  5. Step 5: Solve for x
    x = 183,510,744.88/15,152.16
  6. Step 6: Final answer
    x = 12,111.19

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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.