Home / 12,791,808,801.20-19,187,713,201.80-9,885,849,172.40

Finding the Fourth Proportional to 12,791,808,801.20, 19,187,713,201.80 and 9,885,849,172.40

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Solution

The fourth proportional to 12,791,808,801.20, 19,187,713,201.80 and 9,885,849,172.40 is: 14,828,773,758.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791,808,801.20 : 19,187,713,201.80 = 9,885,849,172.40 : x
  2. Step 2: Convert to fraction form
    12,791,808,801.20/19,187,713,201.80 = 9,885,849,172.40/x
  3. Step 3: Cross multiply
    12,791,808,801.20x = 19,187,713,201.80 × 9,885,849,172.40
  4. Step 4: Simplify right side
    12,791,808,801.20x = 189,686,838,676,263,075,840
  5. Step 5: Solve for x
    x = 189,686,838,676,263,075,840/12,791,808,801.20
  6. Step 6: Final answer
    x = 14,828,773,758.60

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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.