Home / 15,312.17-21,137.27-9,345.98

Finding the Fourth Proportional to 15,312.17, 21,137.27 and 9,345.98

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Solution

The fourth proportional to 15,312.17, 21,137.27 and 9,345.98 is: 12,901.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.17 : 21,137.27 = 9,345.98 : x
  2. Step 2: Convert to fraction form
    15,312.17/21,137.27 = 9,345.98/x
  3. Step 3: Cross multiply
    15,312.17x = 21,137.27 × 9,345.98
  4. Step 4: Simplify right side
    15,312.17x = 197,548,350.26
  5. Step 5: Solve for x
    x = 197,548,350.26/15,312.17
  6. Step 6: Final answer
    x = 12,901.40

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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.