Home / 20,405.19-30,624.18-10,547.35

Finding the Fourth Proportional to 20,405.19, 30,624.18 and 10,547.35

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Solution

The fourth proportional to 20,405.19, 30,624.18 and 10,547.35 is: 15,829.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.19 : 30,624.18 = 10,547.35 : x
  2. Step 2: Convert to fraction form
    20,405.19/30,624.18 = 10,547.35/x
  3. Step 3: Cross multiply
    20,405.19x = 30,624.18 × 10,547.35
  4. Step 4: Simplify right side
    20,405.19x = 323,003,944.92
  5. Step 5: Solve for x
    x = 323,003,944.92/20,405.19
  6. Step 6: Final answer
    x = 15,829.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.