Home / 28,365.30-42,547.95-18,386.10

Finding the Fourth Proportional to 28,365.30, 42,547.95 and 18,386.10

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Solution

The fourth proportional to 28,365.30, 42,547.95 and 18,386.10 is: 27,579.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.30 : 42,547.95 = 18,386.10 : x
  2. Step 2: Convert to fraction form
    28,365.30/42,547.95 = 18,386.10/x
  3. Step 3: Cross multiply
    28,365.30x = 42,547.95 × 18,386.10
  4. Step 4: Simplify right side
    28,365.30x = 782,290,863.50
  5. Step 5: Solve for x
    x = 782,290,863.50/28,365.30
  6. Step 6: Final answer
    x = 27,579.15

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Similar ratio
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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.