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Finding the Fourth Proportional to 25,804,948.80, 38,712,088.80 and 12,993,211.20

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Solution

The fourth proportional to 25,804,948.80, 38,712,088.80 and 12,993,211.20 is: 19,492,166.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,804,948.80 : 38,712,088.80 = 12,993,211.20 : x
  2. Step 2: Convert to fraction form
    25,804,948.80/38,712,088.80 = 12,993,211.20/x
  3. Step 3: Cross multiply
    25,804,948.80x = 38,712,088.80 × 12,993,211.20
  4. Step 4: Simplify right side
    25,804,948.80x = 502,994,345,771,554.50
  5. Step 5: Solve for x
    x = 502,994,345,771,554.50/25,804,948.80
  6. Step 6: Final answer
    x = 19,492,166.01

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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.