Home / 30,547.68-45,788.76-20,013.72

Finding the Fourth Proportional to 30,547.68, 45,788.76 and 20,013.72

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Solution

The fourth proportional to 30,547.68, 45,788.76 and 20,013.72 is: 29,999.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,547.68 : 45,788.76 = 20,013.72 : x
  2. Step 2: Convert to fraction form
    30,547.68/45,788.76 = 20,013.72/x
  3. Step 3: Cross multiply
    30,547.68x = 45,788.76 × 20,013.72
  4. Step 4: Simplify right side
    30,547.68x = 916,403,421.79
  5. Step 5: Solve for x
    x = 916,403,421.79/30,547.68
  6. Step 6: Final answer
    x = 29,999.12

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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.