Home / 27,705.56-38,233.14-15,130.40

Finding the Fourth Proportional to 27,705.56, 38,233.14 and 15,130.40

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Solution

The fourth proportional to 27,705.56, 38,233.14 and 15,130.40 is: 20,879.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,705.56 : 38,233.14 = 15,130.40 : x
  2. Step 2: Convert to fraction form
    27,705.56/38,233.14 = 15,130.40/x
  3. Step 3: Cross multiply
    27,705.56x = 38,233.14 × 15,130.40
  4. Step 4: Simplify right side
    27,705.56x = 578,482,701.46
  5. Step 5: Solve for x
    x = 578,482,701.46/27,705.56
  6. Step 6: Final answer
    x = 20,879.66

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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.