Home / 20,499.19-28,289.40-11,547.02

Finding the Fourth Proportional to 20,499.19, 28,289.40 and 11,547.02

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Solution

The fourth proportional to 20,499.19, 28,289.40 and 11,547.02 is: 15,935.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.19 : 28,289.40 = 11,547.02 : x
  2. Step 2: Convert to fraction form
    20,499.19/28,289.40 = 11,547.02/x
  3. Step 3: Cross multiply
    20,499.19x = 28,289.40 × 11,547.02
  4. Step 4: Simplify right side
    20,499.19x = 326,658,267.59
  5. Step 5: Solve for x
    x = 326,658,267.59/20,499.19
  6. Step 6: Final answer
    x = 15,935.18

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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.