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Finding the Fourth Proportional to 21,598.98, 29,807.51 and 12,038.88

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Solution

The fourth proportional to 21,598.98, 29,807.51 and 12,038.88 is: 16,614.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,598.98 : 29,807.51 = 12,038.88 : x
  2. Step 2: Convert to fraction form
    21,598.98/29,807.51 = 12,038.88/x
  3. Step 3: Cross multiply
    21,598.98x = 29,807.51 × 12,038.88
  4. Step 4: Simplify right side
    21,598.98x = 358,849,035.99
  5. Step 5: Solve for x
    x = 358,849,035.99/21,598.98
  6. Step 6: Final answer
    x = 16,614.17

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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.