Home / 15,875.32-21,909.18-8,803.12

Finding the Fourth Proportional to 15,875.32, 21,909.18 and 8,803.12

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Solution

The fourth proportional to 15,875.32, 21,909.18 and 8,803.12 is: 12,148.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,875.32 : 21,909.18 = 8,803.12 : x
  2. Step 2: Convert to fraction form
    15,875.32/21,909.18 = 8,803.12/x
  3. Step 3: Cross multiply
    15,875.32x = 21,909.18 × 8,803.12
  4. Step 4: Simplify right side
    15,875.32x = 192,869,140.64
  5. Step 5: Solve for x
    x = 192,869,140.64/15,875.32
  6. Step 6: Final answer
    x = 12,148.99

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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.