Home / 30,547.68-42,157.32-18,609.12

Finding the Fourth Proportional to 30,547.68, 42,157.32 and 18,609.12

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Solution

The fourth proportional to 30,547.68, 42,157.32 and 18,609.12 is: 25,681.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,547.68 : 42,157.32 = 18,609.12 : x
  2. Step 2: Convert to fraction form
    30,547.68/42,157.32 = 18,609.12/x
  3. Step 3: Cross multiply
    30,547.68x = 42,157.32 × 18,609.12
  4. Step 4: Simplify right side
    30,547.68x = 784,510,626.76
  5. Step 5: Solve for x
    x = 784,510,626.76/30,547.68
  6. Step 6: Final answer
    x = 25,681.51

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Double scale
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Similar ratio
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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.