Home / 10,547.20-15,806.40-8,603.20

Finding the Fourth Proportional to 10,547.20, 15,806.40 and 8,603.20

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Solution

The fourth proportional to 10,547.20, 15,806.40 and 8,603.20 is: 12,893.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,547.20 : 15,806.40 = 8,603.20 : x
  2. Step 2: Convert to fraction form
    10,547.20/15,806.40 = 8,603.20/x
  3. Step 3: Cross multiply
    10,547.20x = 15,806.40 × 8,603.20
  4. Step 4: Simplify right side
    10,547.20x = 135,985,620.48
  5. Step 5: Solve for x
    x = 135,985,620.48/10,547.20
  6. Step 6: Final answer
    x = 12,893.05

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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.