Home / 20,501.48-28,288.29-11,547.07

Finding the Fourth Proportional to 20,501.48, 28,288.29 and 11,547.07

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Solution

The fourth proportional to 20,501.48, 28,288.29 and 11,547.07 is: 15,932.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501.48 : 28,288.29 = 11,547.07 : x
  2. Step 2: Convert to fraction form
    20,501.48/28,288.29 = 11,547.07/x
  3. Step 3: Cross multiply
    20,501.48x = 28,288.29 × 11,547.07
  4. Step 4: Simplify right side
    20,501.48x = 326,646,864.81
  5. Step 5: Solve for x
    x = 326,646,864.81/20,501.48
  6. Step 6: Final answer
    x = 15,932.84

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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.