Home / 30,547.32-42,155.81-17,800.21

Finding the Fourth Proportional to 30,547.32, 42,155.81 and 17,800.21

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Solution

The fourth proportional to 30,547.32, 42,155.81 and 17,800.21 is: 24,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,547.32 : 42,155.81 = 17,800.21 : x
  2. Step 2: Convert to fraction form
    30,547.32/42,155.81 = 17,800.21/x
  3. Step 3: Cross multiply
    30,547.32x = 42,155.81 × 17,800.21
  4. Step 4: Simplify right side
    30,547.32x = 750,382,270.72
  5. Step 5: Solve for x
    x = 750,382,270.72/30,547.32
  6. Step 6: Final answer
    x = 24,564.59

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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.