Home / 20,501.10-28,289.43-11,547.18

Finding the Fourth Proportional to 20,501.10, 28,289.43 and 11,547.18

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Solution

The fourth proportional to 20,501.10, 28,289.43 and 11,547.18 is: 15,933.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501.10 : 28,289.43 = 11,547.18 : x
  2. Step 2: Convert to fraction form
    20,501.10/28,289.43 = 11,547.18/x
  3. Step 3: Cross multiply
    20,501.10x = 28,289.43 × 11,547.18
  4. Step 4: Simplify right side
    20,501.10x = 326,663,140.31
  5. Step 5: Solve for x
    x = 326,663,140.31/20,501.10
  6. Step 6: Final answer
    x = 15,933.93

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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.