Home / 15,417.03-21,275.42-8,702.31

Finding the Fourth Proportional to 15,417.03, 21,275.42 and 8,702.31

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Solution

The fourth proportional to 15,417.03, 21,275.42 and 8,702.31 is: 12,009.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.03 : 21,275.42 = 8,702.31 : x
  2. Step 2: Convert to fraction form
    15,417.03/21,275.42 = 8,702.31/x
  3. Step 3: Cross multiply
    15,417.03x = 21,275.42 × 8,702.31
  4. Step 4: Simplify right side
    15,417.03x = 185,145,256.71
  5. Step 5: Solve for x
    x = 185,145,256.71/15,417.03
  6. Step 6: Final answer
    x = 12,009.14

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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.