Home / 10,302.90-15,417.36-8,920.95

Finding the Fourth Proportional to 10,302.90, 15,417.36 and 8,920.95

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Solution

The fourth proportional to 10,302.90, 15,417.36 and 8,920.95 is: 13,349.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,302.90 : 15,417.36 = 8,920.95 : x
  2. Step 2: Convert to fraction form
    10,302.90/15,417.36 = 8,920.95/x
  3. Step 3: Cross multiply
    10,302.90x = 15,417.36 × 8,920.95
  4. Step 4: Simplify right side
    10,302.90x = 137,537,497.69
  5. Step 5: Solve for x
    x = 137,537,497.69/10,302.90
  6. Step 6: Final answer
    x = 13,349.40

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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.