Home / 20,308.65-30,457.50-7,159.32

Finding the Fourth Proportional to 20,308.65, 30,457.50 and 7,159.32

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Solution

The fourth proportional to 20,308.65, 30,457.50 and 7,159.32 is: 10,737.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.65 : 30,457.50 = 7,159.32 : x
  2. Step 2: Convert to fraction form
    20,308.65/30,457.50 = 7,159.32/x
  3. Step 3: Cross multiply
    20,308.65x = 30,457.50 × 7,159.32
  4. Step 4: Simplify right side
    20,308.65x = 218,054,988.90
  5. Step 5: Solve for x
    x = 218,054,988.90/20,308.65
  6. Step 6: Final answer
    x = 10,737.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.