Home / 21,316.33-29,426.13-15,641.05

Finding the Fourth Proportional to 21,316.33, 29,426.13 and 15,641.05

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Solution

The fourth proportional to 21,316.33, 29,426.13 and 15,641.05 is: 21,591.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.33 : 29,426.13 = 15,641.05 : x
  2. Step 2: Convert to fraction form
    21,316.33/29,426.13 = 15,641.05/x
  3. Step 3: Cross multiply
    21,316.33x = 29,426.13 × 15,641.05
  4. Step 4: Simplify right side
    21,316.33x = 460,255,570.64
  5. Step 5: Solve for x
    x = 460,255,570.64/21,316.33
  6. Step 6: Final answer
    x = 21,591.69

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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.