Home / 15,030.66-20,739.93-9,725.70

Finding the Fourth Proportional to 15,030.66, 20,739.93 and 9,725.70

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Solution

The fourth proportional to 15,030.66, 20,739.93 and 9,725.70 is: 13,419.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.66 : 20,739.93 = 9,725.70 : x
  2. Step 2: Convert to fraction form
    15,030.66/20,739.93 = 9,725.70/x
  3. Step 3: Cross multiply
    15,030.66x = 20,739.93 × 9,725.70
  4. Step 4: Simplify right side
    15,030.66x = 201,710,337.20
  5. Step 5: Solve for x
    x = 201,710,337.20/15,030.66
  6. Step 6: Final answer
    x = 13,419.93

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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.