Home / 15,225.51-21,009.74-9,558.45

Finding the Fourth Proportional to 15,225.51, 21,009.74 and 9,558.45

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Solution

The fourth proportional to 15,225.51, 21,009.74 and 9,558.45 is: 13,189.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,225.51 : 21,009.74 = 9,558.45 : x
  2. Step 2: Convert to fraction form
    15,225.51/21,009.74 = 9,558.45/x
  3. Step 3: Cross multiply
    15,225.51x = 21,009.74 × 9,558.45
  4. Step 4: Simplify right side
    15,225.51x = 200,820,501.51
  5. Step 5: Solve for x
    x = 200,820,501.51/15,225.51
  6. Step 6: Final answer
    x = 13,189.74

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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.