Home / 14,157.92-19,538.64-7,870.16

Finding the Fourth Proportional to 14,157.92, 19,538.64 and 7,870.16

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Solution

The fourth proportional to 14,157.92, 19,538.64 and 7,870.16 is: 10,861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,157.92 : 19,538.64 = 7,870.16 : x
  2. Step 2: Convert to fraction form
    14,157.92/19,538.64 = 7,870.16/x
  3. Step 3: Cross multiply
    14,157.92x = 19,538.64 × 7,870.16
  4. Step 4: Simplify right side
    14,157.92x = 153,772,222.98
  5. Step 5: Solve for x
    x = 153,772,222.98/14,157.92
  6. Step 6: Final answer
    x = 10,861.22

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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.