Home / 15,528.04-21,428.74-8,454.51

Finding the Fourth Proportional to 15,528.04, 21,428.74 and 8,454.51

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Solution

The fourth proportional to 15,528.04, 21,428.74 and 8,454.51 is: 11,667.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.04 : 21,428.74 = 8,454.51 : x
  2. Step 2: Convert to fraction form
    15,528.04/21,428.74 = 8,454.51/x
  3. Step 3: Cross multiply
    15,528.04x = 21,428.74 × 8,454.51
  4. Step 4: Simplify right side
    15,528.04x = 181,169,496.62
  5. Step 5: Solve for x
    x = 181,169,496.62/15,528.04
  6. Step 6: Final answer
    x = 11,667.25

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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.