Home / 13,645.38-18,820.52-9,397.80

Finding the Fourth Proportional to 13,645.38, 18,820.52 and 9,397.80

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Solution

The fourth proportional to 13,645.38, 18,820.52 and 9,397.80 is: 12,962.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.38 : 18,820.52 = 9,397.80 : x
  2. Step 2: Convert to fraction form
    13,645.38/18,820.52 = 9,397.80/x
  3. Step 3: Cross multiply
    13,645.38x = 18,820.52 × 9,397.80
  4. Step 4: Simplify right side
    13,645.38x = 176,871,482.86
  5. Step 5: Solve for x
    x = 176,871,482.86/13,645.38
  6. Step 6: Final answer
    x = 12,962.00

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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.