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Finding the Fourth Proportional to 30,547.72, 45,859.02 and 18,883.72

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Solution

The fourth proportional to 30,547.72, 45,859.02 and 18,883.72 is: 28,348.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,547.72 : 45,859.02 = 18,883.72 : x
  2. Step 2: Convert to fraction form
    30,547.72/45,859.02 = 18,883.72/x
  3. Step 3: Cross multiply
    30,547.72x = 45,859.02 × 18,883.72
  4. Step 4: Simplify right side
    30,547.72x = 865,988,893.15
  5. Step 5: Solve for x
    x = 865,988,893.15/30,547.72
  6. Step 6: Final answer
    x = 28,348.72

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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.