Home / 15,870.53-21,902.91-8,798.32

Finding the Fourth Proportional to 15,870.53, 21,902.91 and 8,798.32

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Solution

The fourth proportional to 15,870.53, 21,902.91 and 8,798.32 is: 12,142.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,870.53 : 21,902.91 = 8,798.32 : x
  2. Step 2: Convert to fraction form
    15,870.53/21,902.91 = 8,798.32/x
  3. Step 3: Cross multiply
    15,870.53x = 21,902.91 × 8,798.32
  4. Step 4: Simplify right side
    15,870.53x = 192,708,805.50
  5. Step 5: Solve for x
    x = 192,708,805.50/15,870.53
  6. Step 6: Final answer
    x = 12,142.55

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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.