Home / 14,157.90-19,538.55-7,870.68

Finding the Fourth Proportional to 14,157.90, 19,538.55 and 7,870.68

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Solution

The fourth proportional to 14,157.90, 19,538.55 and 7,870.68 is: 10,861.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,157.90 : 19,538.55 = 7,870.68 : x
  2. Step 2: Convert to fraction form
    14,157.90/19,538.55 = 7,870.68/x
  3. Step 3: Cross multiply
    14,157.90x = 19,538.55 × 7,870.68
  4. Step 4: Simplify right side
    14,157.90x = 153,781,674.71
  5. Step 5: Solve for x
    x = 153,781,674.71/14,157.90
  6. Step 6: Final answer
    x = 10,861.90

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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.